Grudgeball
Every team starts with 10 X's. A correct answer lets your team wipe 2 X's off any other team, plus a bonus X for a made basket. Last team standing with X's left wins. Works offline.
Built by the AbraCalc team
How to play
- Type each team's name (2 to 8 teams) and set the starting X count per team (default 10).
- Tap Start Grudgeball to build the board — every team appears with a full row of X's.
- When a team answers correctly, choose which team to target and tap Remove X's (2 X's removed, or 3 with the basket bonus toggle checked).
- Play continues until only one team still has X's remaining — that team wins, with a confetti celebration.
Grudgeball digitizes the classroom review classic where every team starts with a row of X's on the board and answering correctly means striking another team's X's instead of earning your own points. Type in your teams and set a starting X count (10 is the traditional total), then run review as normal: whenever a team answers correctly, pick which team loses 2 X's, and flip on the basket bonus toggle if they also sink a shot for one extra X removed. X counts are tracked as a raw, always-visible number that can never drop below zero, and each team's row visually grays out the moment it hits zero, marked Eliminated. The game ends the instant only one team still has X's remaining, with a confetti win banner — or calls a draw in the rare case two teams are wiped out on the very same answer.
Frequently asked questions
- What are the real rules Grudgeball is based on?
- In classic Grudgeball, every team starts with a set number of X's on the board (commonly 10). A team that answers a review question correctly gets to erase 2 X's from any opposing team's total, and some classrooms add a bonus shot at a basket for an extra X removed. The last team with X's remaining wins.
- Can a team's X count go below zero?
- No. X counts are clamped at zero — if a team only has 1 X left and 2 are removed, that team simply drops to 0 and is marked Eliminated rather than going negative.
- What happens if two teams hit zero on the exact same turn?
- That's treated as a draw rather than declaring a winner, since simultaneous elimination means no single team is left standing — the game banner announces the draw instead of picking a winner.