About Optional Boss
Instance reset at 03:00.
Screenshots and video
Tags and modes
More like this
Indie browser games
5318008
Game Jam · 2026
Playable0 de Waru Kinou
Multiple Endings · 2025
10 Advices
Educational · 2024
1-Bit Explorer
Exploration · 2023
10-103: Null Kelvin
Action · 2021
0 = 0 = 0
Puzzle · 2020
Playable0000
Numerical Title · 2017
Playable0h N0
Free to Play · 2015
Playable2048
Math · 2014
Playable10 Gnomes 12: the Tank
Hidden Object · 2008
Playable10 Gnomes 11: the Remains
Hidden Object · 2008
Playable10 Gnomes 10: Seashore
Hidden Object · 2008
More like this
Adventure browser games
Playable2025 Advent Calendar
Shooter · 2025
2-Bit Explorer
Exploration · 2024
Playable2/29
Weird · 2024
2021: Moon Escape
Retro · 2022
204863
Homebrew · 2022
100 Years A Vampire
Interactive Fiction · 2021
Playable10mg: Always Down
Metroidvania · 2020
Playable10mg: You are such a Soft and Round Kitten.
Cat · 2020
Playable1v1.LOL
Action · 2019
Playable16 Ways to Kill a Vampire at McDonalds
Text Adventure · 2016
4185113
Yume Nikki Fangame · 2011
1916: Der Unbekannte Krieg
Dinosaurs · 2011