Worms 4: Mayhem by Team17 takes about 2 hours to beat the main story, or roughly 4 hours to complete 100%.
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The Worms series continues with Worms 4: Mayhem. You can engage in the turn-based combat that the series has become known for across predesigned or random 3D maps. Worms 4: Mayhem delivers new weapons as well as more customization options, allowing you to design your teams and the arsenal that they use. You can unlock bonuses in the 25-mission story mode or play online against up to four other players.