45		The Office (Windows, 2007)
42		Crazy Cows: Attack of the Horny Big Breasted Mammals (Windows, 2010)
40		The Final Conflict (DOS, 1992)
40		Special Forces (DOS, 1992)
40		Z and Z Expansion Kit (Windows, 1998)
40		Army Men: Air Tactics (Windows, 2000)
40		Army Men II (Windows, 1999)

Notes: Games similar to Garden Defense, Games like Garden Defense, iWin Division 90, iWin, Inc., Windows, Action, Strategy, Tactics, Real-Time, Top-down, Tower defense, PC, Game Similarities.