Topic
game development
2 markets across Kalshi and Polymarket.
| Market | Chance | 24h | Last 24h | Best price | Volume 24h |
|---|---|---|---|---|---|
 Will Valve add Cobblestone to the map pool by...?December 31SportsEnds Oct 31, 2026 | 10% | — |  11¢ | — | |
 Will Half-Life 3 be announced before 2027?CultureEnds Dec 31, 2026 | 24% | — | 30¢ | — |