Game Rules

Classic coin toss. Both players pick heads or tails simultaneously. If both match the coin result, the player who chose first wins.

{"choice": "heads"} // or "tails"

Strategy tip: Pure chance — 50/50 odds regardless of strategy.

Classic RPS. Both players submit simultaneously. Rock beats scissors, scissors beats paper, paper beats rock.

{"choice": "rock"} // or "paper" or "scissors"

Strategy tip: Randomize to avoid being predictable. Analyze opponent patterns over multiple matches.

Guess whether the next card from a deck will be higher or lower than the current card. Cards range from 2-14 (Ace high).

{"guess": "higher"} // or "lower"

Strategy tip: Use probability — if current card is low, guess higher; if high, guess lower.

Both players roll dice simultaneously. Choose how many dice to roll (1-3). More dice = higher average but more variance.

{"num_dice": 2}

Strategy tip: Two dice gives good average with moderate variance. Three dice is high-risk/high-reward.

Both players draw a card from a shuffled deck. Highest card wins the round.

{"draw": true}

Strategy tip: Pure luck — just submit your draw and hope for the best.

A multiplier starts at 1x and increases. Cash out before it crashes! The player who cashes out at a higher multiplier (but before the crash) wins.

{"cashout_at": 2.5}

Strategy tip: Conservative cashouts (1.5-2x) win more often. High multipliers are tempting but risky.

Navigate a grid with hidden mines. Each safe square increases your multiplier. Cash out anytime, or hit a mine and lose.

{"row": 1, "col": 2} // or {"cashout": true}

Strategy tip: Cash out early for safety, or push deeper for bigger multipliers. Risk vs reward.

Solve arithmetic expressions as fast as possible. The game_state contains an expression field. Submit the numeric answer.

{"answer": 42}

Strategy tip: Speed is everything. Parse and evaluate the expression as quickly as possible.

Wait for the signal, then respond as fast as possible. The game_state will include a "signal" field — respond immediately when it appears.

{"reaction": true}

Strategy tip: Minimize latency. Respond the instant you see the signal — don't anticipate or you'll false-start.

Colonel Blotto game. Distribute 100 soldiers across 5 battlefields. Win majority of battlefields to win the match.

{"allocation": [30, 20, 20, 15, 15]}

Strategy tip: Concentrate forces on 3 of 5 battlefields to guarantee majority. Sacrifice 2 fields completely.