65		Batalia (DOS, 1986)
65		Tommy's Turkeys (DOS, 1986)
64		Tommy's Floppy Discus (DOS, 1987)
64		The Worm (DOS, 1985)
64		Hopper (DOS, 1985)
64		Tommy's Gorilla Ball Tag (DOS, 1987)
64		Tommy's Enet (DOS, 1987)
63		Memory Hog Hunter (DOS, 1988)
63		Nerm of Bemer (DOS, 1984)
63		Mad Mix Game (DOS, 1988)
63		Snakes (DOS, 1988)
62		Pango (DOS, 1983)
62		Packman (DOS, 1983)
62		Amazing Maze (DOS, 1983)
62		Chomps (DOS, 1983)
62		Fluf! (DOS, 1989)
62		Microsoft Mouse (included game) (DOS, 1989)
62		Centipede (DOS, 1983)
61		Zap'em (DOS, 1982)
61		PacWorm (DOS, 1982)
61		Squirm (DOS, 1982)
61		Serpent (DOS, 1982)
61		Toad Road (DOS, 1990)
61		Gobble Man (DOS, 1982)
61		The Queen of Hearts Maze Game (DOS, 1982)
61		Hoser (DOS, 1982)
61		Pac-Man: Championship Edition 2 (Windows, 2016)
60		Heavy Water Jogger (DOS, 1992)
60		Kwik Snax (DOS, 1993)
60		Champ Centipede (DOS, 1993)
60		AstroFire (DOS, 1994)
60		Fast Food (DOS, 1992)
60		Wurm (DOS, 1993)
60		Disasteroids 3D (Windows, 2000)
60		Ms. Pac-Man (Windows, 2016)
60		Brick Breaker (Windows, 2017)
60		Psibo (Windows, 2016)
60		Cultures: The Beginning (Windows, 2000)
60		Antz: Panic in the Anthill! (Windows, 2001)
60		CHAMP Ms. Pac-em (DOS, 1996)
60		Whack A Croc (Windows, 1999)
60		JoustPong (Windows, 1998)
60		Cosmic Snake 8473/3671 (HAMLETs) (Windows, 2018)
60		Escape from Monster-Castle (DOS, 1993)
60		Pune (DOS, 1995)
60		Bloxinies II (DOS, 2016)
60		H-Tron (DOS, 2016)
60		Bloxinies (DOS, 2013)
60		Chinese Hero (Windows, 2018)
60		Blue Snake Adventures (Windows, 2017)
60		Lady Bug (DOS, 2008)
60		CHAMP Pac-em (DOS, 1996)
60		Pac-Man: Championship Edition DX (Windows, 2013)
60		Pacman256 (DOS, 2015)
60		Ping (Windows, 2017)
60		Rainbow Snake (Windows, 2017)
60		Snakeez (Windows, 2017)
60		Pac PC (DOS, 1995)
60		Comecocos (Windows, 2002)
60		Dragon Jumper (Windows, 2002)
60		Pacman (Windows, 2002)
60		Quadrun (Windows, 2010)
60		Freeway (Windows, 2010)
60		Snafu (Windows, 2010)
60		Pac-Man (Windows, 2009)
60		Robber (Windows, 2009)
60		Sweeties (Windows, 2006)
60		Christmas Super Frog (Windows, 2000)
60		Eicheljagd (Windows, 2007)
60		Black Penguin (Windows, 2001)
60		Eisbär!: Das PC-Spiel (Windows, 2008)
60		Food Fight (Windows, 2010)
60		Surround (Windows, 2010)
60		MSOIDS (Windows, 2007)
60		Dingo (Windows, 2008)
60		Diner Dash 5: BOOM! (Windows, 2010)
60		Unholy Stage (Windows, 2006)
60		Deluxe PocMon (Windows, 2006)
55		Blasten ! (DOS, 1986)
55		Maze Runner (DOS, 1986)
55		Tommy's Hyperdrive (DOS, 1986)
54		Tommy's Gorilla Ball Gauntlet (DOS, 1987)
54		Lucky Luke (DOS, 1987)
54		Worm Burner (DOS, 1987)
53		Arkanoid (DOS, 1988)
52		Tron Light Cycles (DOS, 1983)
52		Meteors (DOS, 1989)
52		Bomberman (DOS, 1992)
52		Virus Rage (DOS, 1983)
52		Ricochet: Lost Worlds (Windows, 2004)
50		Last Soldier (Windows, 2017)
50		Titan Attacks! (Windows, 2006)
50		Space Duel (Windows, 2010)
50		Space Asteroid Shooter (Windows, 2017)
50		Warlords (Windows, 2010)
50		Gyruss (Windows, 2010)
50		CHAMP Asterocks (DOS, 1997)
50		Quadnet (DOS, 1998)
50		Blastocyst (DOS, 2005)
50		Back to Earth (Windows, 2004)
50		Son of Scoregasm (Windows, 2017)
50		Slybots: Frantic Zone (Windows, 2016)
50		DarkSide (Windows, 2007)
50		ANIMAC (DOS, 1991)
50		Foxeroids (Windows, 2003)
50		Totally Tiny Arcade (Windows, 2007)
50		Styx (DOS, 1998)
50		Alien Field 3671 (Windows, 2018)
50		Ballz: Farm (Windows, 2018)
50		Space Hawk (Windows, 2010)
50		Blast Zone! Tournament (Windows, 2018)
50		Juggernaut Corps: First Assault (Windows, 1998)
50		Galaga (Windows, 2004)
50		FreeStrike (Windows, 2001)
50		Swarm (Windows, 1998)
50		Alien Sky (Windows, 2004)
50		Jetsons: The Computer Game (DOS, 1992)
50		Back to Earth 2 (Windows, 2007)
50		Debris (Windows, 1999)
50		Genital Jousting (Windows, 2016)
50		Asteroids Fighter (Windows, 2003)
50		Atomic Bomberman (Windows, 1997)
50		Vectoroids (Windows, 2002)
50		3D Astro Blaster (Windows, 1999)
50		Pac-Man (Windows, 2004)
50		Warning Forever (Windows, 2003)
50		Turn n' Burn (DOS, 1992)
50		Hardnoid (Windows, 2017)
50		DriftZone (Windows, 2000)
50		Asteroid Miner (Windows, 2003)
50		Robotron: 2084 (DOS, 1995)
50		Super Rock Blasters (Windows, 2017)
50		Spheroids (DOS, 1993)
44		Spacewar (DOS, 1985)
43		Space Adventure (DOS, 1988)
42		Beat Hazard 2 (Windows, 2018)
41		Rocket Rangers (DOS, 1990)
40		HarshGame (DOS, 1991)
40		Megamania (Windows, 2010)
40		Meteor Crash (Windows, 2003)
40		Crazy Nick's Software Picks: Roger Wilco's Spaced Out Game Pack (DOS, 1992)
40		Super Stardust (DOS, 1996)
40		Star Trek: The Neutral Zone (Windows, 2003)
40		Shooting Stars! (Windows, 2016)
40		Asteroids Deluxe (Windows, 2010)
40		Space Scumbags (Windows, 2017)
40		Asteroids (Windows, 2010)
40		Space War (Windows, 2010)
40		Asteroids (Windows, 1998)
40		AstroRaid (Windows, 2003)

Notes: Games similar to Gapper, Games like Gapper, DOS, Action, Arcade, Top-down, Fixed, Flip-screen, PC, Game Similarities.