299 downloads


Description:
Undertale Boss Ascension is a legendary artifact that, when activated with Shift + Right-click, transforms you into an overpowered boss—granting +20 hearts, 60% damage reduction, and enhanced strength, speed, and jump. While in Boss Mode, press G or R to cycle through nine devastating abilities, based on bosses from undertale.
Manage versions and create new iterations of this mod.
This will create a new mod based on "Undertale Boss Ascension" with your modifications. The original mod will remain unchanged and you'll be credited as the author of the remix.
This will create a new version of "Undertale Boss Ascension" for Minecraft Java 1.20.1. The original mod will remain unchanged.
299
Sep 5, 2025, 03:29 PM
User request: An item which gives you powers of all the bosses from the video game undertale, making yourself a boss. Edit v2: merge the abilities (ghaster blaster, undyne spear, asgore trident etc) from version 2, to the fixed boss mode from version 3 Edit v5: boss mode isn't activating Edit v6: make it so each ability does a lot more damage than it did previously (at least 20), make papyrus' bones summon a wave of bones which goes across the ground in a straight line from where it is activated, make flowey's ability throw nukes (but doesnt do massive explosion), make sans' ghaster blaster beam larger and make it so you can switch between abilities and execute them individually rather than one after the other (when switching to sans' ghaster blaster for example be able to use it as many times as you want without switching to a different ability after using it once) via making a hotkey (t) to switch through to different abilities, and having RMB execute them Edit v7: keep all features but: change the switch ability key to R, make papyrus' bone wave evoker fangs, make asgore's royal slam a full firey circle which make the ground shake (dirt breaking particles), add mettaton's pulling arm which pulls mobs towards the player with great force, add asriel's star rain which has a lot of projectiles, make flowey's nuke 5 tnt in a cone in front of the player, add a 1 second cooldown between abilities, display the damage of each ability in the details of the item Edit v11: keep everything the same but make these changes: toriel's protective fire - 0 dmg - 5 second cooldown metatton pulling arm - 2.5 dmg - 2.5 second cooldown papyrus' bone wave - 12.5 dmg per fang - 3.5 second cooldown undyne's spear volley - 17.5 per spear - 5 second cooldown sans' ghaster blaster - 20 dmg - 7.5 second cooldown asgore's royal slam - 25 dmg - 10 second cooldown - filled circle of fire asriel's star rain - 12.5 dmg per projectile - 3.5 second cooldown - more projectiles flowey's nuke - 15 dmg per tnt - 7.5 second cooldown - explodes when it comes into contact with a block (not air) replace one nether star in the recipe with a chorus flower replace one nether star in the recipe with an echo shard swap the diamond block and the beacon replace one of the wither skulls with a dragon head replace one of the ender pearls with an eye of ender replace one of the ender pearls with a netherite scrap Edit v12: keep everything the same but make these changes: add an ability called Gaster's Dark Dash which throws an ender pearl with a 3.5 second cooldown and when the player lands create a puff of black smoke where they were and where they land, change flowey's nuke to shoot out a cone of 5 tnt, change asgore's royal slam to make a circle of fire particles not a circle of fire, make it so the hotkey G switches to the next ability and R switches to the previous ability, reduce all cooldowns of more than 3 seconds by 2 seconds, reduce mettaton's pulling arm's cooldown by 1 second and make it do 0.5 damage, make it so when the player dies a red heart revives them like a totem of undying (which only works once per life) which gives the player the achievement "DETERMINATION" with the description "Become filled with DETERMINATION", repair the recipe because it doesn't work, upon the first time picking up the undertale boss ascension give the player the achievement "Higher than God himself" with the description "Obtain the Undertale Boss Ascension" Edit v13: Keep everything else the same but make these changes: make the recipe 1 ender pearl bottom left, one diamond block bottom centre, one netherite ingot bottom right, one dragon head middle centre, one beacon centre middle, one wither skull centre right, one chorus flower top left, one dragon egg top middle and one echo shard top right Edit v15: keep everything the same but make these changes: all abilities seem to have random starting cooldowns in any other world rather than a quickplay world, make sure they have cooldowns for as long as intended
1
Sep 5, 2025, 03:14 PM
User request: An item which gives you powers of all the bosses from the video game undertale, making yourself a boss. Edit v2: merge the abilities (ghaster blaster, undyne spear, asgore trident etc) from version 2, to the fixed boss mode from version 3 Edit v5: boss mode isn't activating Edit v6: make it so each ability does a lot more damage than it did previously (at least 20), make papyrus' bones summon a wave of bones which goes across the ground in a straight line from where it is activated, make flowey's ability throw nukes (but doesnt do massive explosion), make sans' ghaster blaster beam larger and make it so you can switch between abilities and execute them individually rather than one after the other (when switching to sans' ghaster blaster for example be able to use it as many times as you want without switching to a different ability after using it once) via making a hotkey (t) to switch through to different abilities, and having RMB execute them Edit v7: keep all features but: change the switch ability key to R, make papyrus' bone wave evoker fangs, make asgore's royal slam a full firey circle which make the ground shake (dirt breaking particles), add mettaton's pulling arm which pulls mobs towards the player with great force, add asriel's star rain which has a lot of projectiles, make flowey's nuke 5 tnt in a cone in front of the player, add a 1 second cooldown between abilities, display the damage of each ability in the details of the item Edit v11: keep everything the same but make these changes: toriel's protective fire - 0 dmg - 5 second cooldown metatton pulling arm - 2.5 dmg - 2.5 second cooldown papyrus' bone wave - 12.5 dmg per fang - 3.5 second cooldown undyne's spear volley - 17.5 per spear - 5 second cooldown sans' ghaster blaster - 20 dmg - 7.5 second cooldown asgore's royal slam - 25 dmg - 10 second cooldown - filled circle of fire asriel's star rain - 12.5 dmg per projectile - 3.5 second cooldown - more projectiles flowey's nuke - 15 dmg per tnt - 7.5 second cooldown - explodes when it comes into contact with a block (not air) replace one nether star in the recipe with a chorus flower replace one nether star in the recipe with an echo shard swap the diamond block and the beacon replace one of the wither skulls with a dragon head replace one of the ender pearls with an eye of ender replace one of the ender pearls with a netherite scrap Edit v12: keep everything the same but make these changes: add an ability called Gaster's Dark Dash which throws an ender pearl with a 3.5 second cooldown and when the player lands create a puff of black smoke where they were and where they land, change flowey's nuke to shoot out a cone of 5 tnt, change asgore's royal slam to make a circle of fire particles not a circle of fire, make it so the hotkey G switches to the next ability and R switches to the previous ability, reduce all cooldowns of more than 3 seconds by 2 seconds, reduce mettaton's pulling arm's cooldown by 1 second and make it do 0.5 damage, make it so when the player dies a red heart revives them like a totem of undying (which only works once per life) which gives the player the achievement "DETERMINATION" with the description "Become filled with DETERMINATION", repair the recipe because it doesn't work, upon the first time picking up the undertale boss ascension give the player the achievement "Higher than God himself" with the description "Obtain the Undertale Boss Ascension" Edit v13: Keep everything else the same but make these changes: make the recipe 1 ender pearl bottom left, one diamond block bottom centre, one netherite ingot bottom right, one dragon head middle centre, one beacon centre middle, one wither skull centre right, one chorus flower top left, one dragon egg top middle and one echo shard top right
2
Sep 4, 2025, 09:02 PM
User request: An item which gives you powers of all the bosses from the video game undertale, making yourself a boss. Edit v2: merge the abilities (ghaster blaster, undyne spear, asgore trident etc) from version 2, to the fixed boss mode from version 3 Edit v5: boss mode isn't activating Edit v6: make it so each ability does a lot more damage than it did previously (at least 20), make papyrus' bones summon a wave of bones which goes across the ground in a straight line from where it is activated, make flowey's ability throw nukes (but doesnt do massive explosion), make sans' ghaster blaster beam larger and make it so you can switch between abilities and execute them individually rather than one after the other (when switching to sans' ghaster blaster for example be able to use it as many times as you want without switching to a different ability after using it once) via making a hotkey (t) to switch through to different abilities, and having RMB execute them Edit v7: keep all features but: change the switch ability key to R, make papyrus' bone wave evoker fangs, make asgore's royal slam a full firey circle which make the ground shake (dirt breaking particles), add mettaton's pulling arm which pulls mobs towards the player with great force, add asriel's star rain which has a lot of projectiles, make flowey's nuke 5 tnt in a cone in front of the player, add a 1 second cooldown between abilities, display the damage of each ability in the details of the item Edit v11: keep everything the same but make these changes: toriel's protective fire - 0 dmg - 5 second cooldown metatton pulling arm - 2.5 dmg - 2.5 second cooldown papyrus' bone wave - 12.5 dmg per fang - 3.5 second cooldown undyne's spear volley - 17.5 per spear - 5 second cooldown sans' ghaster blaster - 20 dmg - 7.5 second cooldown asgore's royal slam - 25 dmg - 10 second cooldown - filled circle of fire asriel's star rain - 12.5 dmg per projectile - 3.5 second cooldown - more projectiles flowey's nuke - 15 dmg per tnt - 7.5 second cooldown - explodes when it comes into contact with a block (not air) replace one nether star in the recipe with a chorus flower replace one nether star in the recipe with an echo shard swap the diamond block and the beacon replace one of the wither skulls with a dragon head replace one of the ender pearls with an eye of ender replace one of the ender pearls with a netherite scrap Edit v12: keep everything the same but make these changes: add an ability called Gaster's Dark Dash which throws an ender pearl with a 3.5 second cooldown and when the player lands create a puff of black smoke where they were and where they land, change flowey's nuke to shoot out a cone of 5 tnt, change asgore's royal slam to make a circle of fire particles not a circle of fire, make it so the hotkey G switches to the next ability and R switches to the previous ability, reduce all cooldowns of more than 3 seconds by 2 seconds, reduce mettaton's pulling arm's cooldown by 1 second and make it do 0.5 damage, make it so when the player dies a red heart revives them like a totem of undying (which only works once per life) which gives the player the achievement "DETERMINATION" with the description "Become filled with DETERMINATION", repair the recipe because it doesn't work, upon the first time picking up the undertale boss ascension give the player the achievement "Higher than God himself" with the description "Obtain the Undertale Boss Ascension"
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This mod is licensed under the CreativeMode Mods License.