A strategy-building game based on a blackjack roguelike. Play your cards against a Japanese demon using relics that your plays and the rules themselves . Manage your money, choose the upgrades for you relics, and survive rounds with random and unfair rules.

<p class="bb_paragraph" >You're trapped with a demon in a room with no way out—your only chance to survive? Beat him at Black Jack. Oni Jack is a blackjack roguelike where traditional rules don't apply. Use mystical relics to alter your plays, trick your evil opponent, or save yourself from certain death. Plus, purchase upgrades for these relics to boost their effects and go further in the misterious gauntlet; survive the cursed rounds that change the game’s rules; defeat the various bosses who use cursed powers to their advantage; and ultimately defeat the evil Oni at his own game. Will you bet your soul in this PS2-style nightmare?</p>

Good Game Database

OniJack Achievements