Trenches is a wonderfully designed game that can be a heck of a lot of fun to play. There’s a lot happening on screen, but the developers do a fairly good job of making it accessible to players. The game doesn’t take long to finish on its easy and moderate modes, but does have some replayability — and rewards a player’s victory by unlocking a zombie horde mode, which pits players against a never-ending wave of comedically undead German soldiers. The inclusion of multiplayer is a great addition for adults, giving them a chance to pit their skills against others and give the game a longer lifespan, but it opens up a lot of concerns for children. And some people may find the gameplay a bit too repetitive for their tastes. Still, for its 99-cent asking price, it’s a great option for older teens and adults.