Right across from your office in Mouse: P.I. For Hire is a bar called Little & Big. Inside, you’ll find a locked machine — the Prize D-Spenser — which can only be opened using special prize tokens. You’ll need to collect 20 of these tokens to claim its reward.
To get tokens, you need to win the “Baseball Cards” mini-game.
At the back of the bar, there’s always a mouse ready to play against you. Each match costs $50.
While it’s a strategic card game, luck plays a big role.
You can improve your chances of winning by finding new cards during missions or buying them at the nearby Soup to Nuts shop.
Important: You only receive 1 token for a win. If you lose or draw, you get nothing—and your $50 is gone.
Since you need 20 tokens to unlock the machine, you’ll need at least $1,000 (assuming perfect wins). To avoid going broke, use this trick:

Once you collect all 20 tokens, you can unlock the D-Spenser.
Inside, you’ll find the X1 D-Mousefier — a powerful ray gun that instantly upgrades your combat arsenal. Along with the weapon, you’ll also earn the achievement “Everybody Loves Rayguns” for your card-playing success.

Recall that all participants for the Brawl Cup 2026 have now been determined.