Undertale Sans Boss Fight is a challenging boss battle simulator. Are prepared for fighting Sans? If you’re confident in your skills, try to beat sans.
When did undertale come out?
Undertale came out on September 15, 2015.
What is undertale?
Undertale is an 8-bit role-playing game made by indie developer Toby Fox.
How long is undertale?
If you're going to finish the game it's about 6 hours but if you want to see all endings it's 20 hours.
Move heart with WASD or Arrow keys.
Press Enter to Start.