Osamu : The Slime Killer

  • Losmix
  • 1 year ago


This is a brutally hard game about young samurai called Osamu who is trying to save the world from dark slimes which attack human brains and force them to commit suicide.

How long will you survive?

How to play:

  • Add coin

  • Select game mode

  • Click start

  • Kill all slimes in the room

  • Change room by going through the door

This game features:

  • 20 main levels

  • Boss fight

  • Insane arena level

  • Gamepad compatibility

    Enjoy! :)



  • Move : W , A , S , D

  • Attack : K

  • Dash: L

Xbox controller:

  • Move : Left Analog Stick

  • Attack : X

  • Dash : B

Third Party controllers:

  • Move : Left Analog Stick

  • Attack : 3

  • Dash : 2

*note : Checkpoints are disabled to make the game harder


You must be logged in to leave feedback
Register or log in to start writing.
    There doesn't seem to be anything here.


There doesn't seem to be anything here.


This game has not yet been claimed by its original developers. As a result of migrating the games to new infrastructure, the original developers must go through a claiming process in order to attach their past games to their new accounts. For more information, please see the Frequently Asked Questions article.
To claim the game, please go to Claim your games and follow the instructions provided there.