65		Super Bubble Mania (DOS, 1997)
65		Yongzhe Paopao Long (DOS, 1997)
64		Pac 2000 (DOS, 1996)
64		Aliens (DOS, 1996)
64		Air-Strike (DOS, 1998)
64		DX-Ball 2 (Windows, 1999)
64		Bombman! (Windows, 1996)
64		Les Fous Volants (Windows, 1996)
64		StoneBreaker (DOS, 1996)
64		Choppy the Pork Chop (Windows, 1996)
63		Disney's Arcade Frenzy (Windows, 1999)
63		Digger (DOS, 1999)
63		Ack-Ack Attack! (DOS, 1995)
63		Bap!!! (DOS, 1995)
63		Booym (Windows, 1999)
63		N (Windows, 2004)
63		Disney's Timon & Pumbaa's Jungle Games (Windows, 1995)
63		Super Crate Box (Windows, 2010)
63		Swat! (Windows, 1995)
63		Cap'n Crunch's Crunchling Adventure (Windows, 1999)
62		G-stones III (DOS, 1994)
62		Bubble Blobb II (DOS, 1994)
62		God Jul! (DOS, 1994)
62		Bustout! (Windows, 2000)
62		Pea Shootin' Pete (DOS, 1994)
62		Handsome Mr. Frog (Windows, 2016)
61		Sandstorm (DOS, 1993)
61		Spider Boxer (DOS, 1993)
61		Super Trix (DOS, 1993)
61		Il grande gioco di Tangentopoli (DOS, 1993)
61		BreakQuest (Windows, 2004)
61		Bubble Blobb (DOS, 1993)
61		Ball Breakers Corp. (DOS, 1993)
61		The Munsters (DOS, 1993)
61		Spit Wad Willy (DOS, 1993)
61		Stardust Vanguards (Windows, 2015)
61		Joe Snow (DOS, 1993)
61		Jetpack: Christmas Special (DOS, 1993)
61		WISO Breakout (DOS, 1993)
61		Buggers (Windows, 2001)
61		Smuś (DOS, 1993)
61		Joe Snow 2 (DOS, 1993)
60		Goody (DOS, 1987)
60		Climber 5 (DOS, 1987)
60		Aldo's Adventure (DOS, 1987)
60		Tommy's Gorilla Ball Babies (DOS, 1987)
60		Journey to the Center of the Earth (DOS, 1988)
60		Tommy's Rocks (DOS, 1987)
60		Mushroom Mania (DOS, 1987)
60		Burger Blaster (DOS, 1988)
60		Dr. Sleeptite and the Nightmare Factory (DOS, 1988)
60		Pharaoh's Revenge (DOS, 1988)
60		Meteor (DOS, 1981)
60		Blockbuster (DOS, 1988)
60		Lazer Beam Wars (DOS, 1988)
60		Knoxblock! (DOS, 1986)
60		Bit-Bat (DOS, 1982)
60		Rampage (DOS, 1988)
60		Diamond Digger (DOS, 1986)
60		Spyder (DOS, 1983)
60		Skeet Shoot (DOS, 1982)
60		IBM Personal Computer BASIC Compiler (included game) (DOS, 1982)
60		Flyswat (DOS, 1983)
60		David's Kong (DOS, 1984)
60		Bubble Bobble (DOS, 1988)
60		Bouncing Babies (DOS, 1984)
60		Spinout (DOS, 1982)
60		Janitor Joe (DOS, 1984)
60		Hamburger Hell (DOS, 1986)
60		Anti-Ballistic-Missile (DOS, 1982)
60		Missle Strike (DOS, 1982)
60		Disk Crash (DOS, 1985)
60		Smashout (DOS, 1984)
60		Bird Brain (DOS, 1984)
60		Tommy's Stompers (DOS, 1986)
60		Hammer Boy (DOS, 1991)
60		Diamond Ball III (DOS, 1992)
60		Blockage (DOS, 2003)
60		BOLTX (DOS, 2010)
60		Aquanoid (DOS, 1992)
60		Elevators from Hell (DOS, 1992)
60		Wizkid: The Story of Wizball II (DOS, 1992)
60		Super Ball ! (DOS, 1992)
60		She Bo (DOS, 1992)
60		Crazy Toad (Windows, 2017)
60		Infernal Racket (Windows, 2017)
60		Breakoff (DOS, 1989)
60		Aldo's Assault (DOS, 1991)
60		Pac (DOS, 1992)
60		Tick Attack (DOS, 1983)
60		Super Weekend Mode (Windows, 2018)
60		Degauss (Windows, 2017)
60		S-COPTER: Trials of Quick Fingers and Logic (Windows, 2018)
60		Harambe Kong (Windows, 2018)
60		Popeye 2 (DOS, 1992)
60		Moraff's Blast I (DOS, 1991)
60		Arkanoid: Revenge of DOH (DOS, 1989)
60		Fiendish Freddy's Big Top O' Fun (DOS, 1989)
60		Twilight Treasures (DOS, 1989)
60		Super Pac-Man (DOS, 1989)
60		Aldo Again (DOS, 1989)
60		Rompe Muros (DOS, 1989)
60		Intifada (DOS, 1989)
60		Chuckie Egg (DOS, 1989)
60		Shaft (DOS, 1990)
60		Navy Moves (DOS, 1990)
60		ABM (DOS, 1991)
60		Scud Atak (DOS, 1991)
60		Crackhead (Windows, 2016)
60		F.Godmom (DOS, 1991)
60		Goferpop (DOS, 1991)
60		Cool Ball (DOS, 1990)
60		Los Inhumanos (DOS, 1990)
60		Alive Sharks (DOS, 1990)
60		Bong Bong (DOS, 1989)
60		Rebound (DOS, 1985)
60		Digger (Windows, 2003)
60		Superstar Chefs (Windows, 2003)
60		Pitfall II: Lost Caverns (Windows, 2010)
60		Breakout (Windows, 2010)
60		Pressure Cooker (Windows, 2010)
60		Kaboom! (Windows, 2010)
60		Skydiver (Windows, 2010)
60		Yie Ar Kung-Fu (Windows, 2010)
60		Off the Wall (Windows, 2010)
60		Pooyan (Windows, 2010)
60		Aquanoid 2 (Windows, 2004)
60		HamsterJam (Windows, 2004)
60		Insect Invade II (Windows, 2005)
60		Bubble Bobble (Windows, 2004)
60		Exerion (Windows, 2004)
60		Bomb the City (Windows, 2003)
60		White House Joust (Windows, 2004)
60		Millipede (Windows, 2004)
60		Dig Dug (Windows, 2016)
60		Air-Sea Battle (Windows, 2010)
60		Double Digger (Windows, 2002)
60		Robber (Windows, 2009)
60		Worlds of Billy 2 (Windows, 2002)
60		Aquanoid 2 Gold (Windows, 2008)
60		Virus Crashers (Windows, 2006)
60		X-Tranoid (Windows, 2003)
60		Beetle Ju (Windows, 2003)
60		Pinwall (Windows, 2003)
60		Bubble Bobble Quest (Windows, 2002)
60		Centipede (Windows, 2010)
60		Buzz Bombers (Windows, 2010)
60		Spider Fighter (Windows, 2010)
60		Frog Bog (Windows, 2010)
60		Demons to Diamonds (Windows, 2010)
60		Shark! Shark! (Windows, 2010)
60		Super Breakout (Windows, 2010)
60		Pitfall! (Windows, 2010)
60		Oink! (Windows, 2010)
60		Froggy Castle (Windows, 2003)
60		H.E.R.O. (Windows, 2010)
60		Life is a Race (Windows, 2008)
60		Granny's Garden (Windows, 2007)
60		Pirate Pop Plus (Windows, 2016)
60		Penarium (Windows, 2015)
60		Spikit (Windows, 2016)
60		HassleHeart (Windows, 2015)
60		Pengie (Windows, 2014)
60		Älg Invaders: Return of the Gädda (Windows, 2016)
60		You Have to Win the Game (Windows, 2012)
60		Pang Adventures (Windows, 2016)
60		Truffle Saga (Windows, 2014)
60		Final Slam 2 Gold (Windows, 2014)
55		Super Stupid Space Invaders (DOS, 1997)
55		Avenger (DOS, 1997)
55		CHAMP Invaders (DOS, 1997)
55		CHAMP Galagon (DOS, 1997)
55		Orbsters (Windows, 1997)
55		Mars Taxi (Windows, 1997)
54		TIE Invaders (DOS, 1996)
54		SinkSub Pro (Windows, 1996)
54		CHAMP Galaxia (DOS, 1996)
54		Galagatron (Windows, 1996)
53		LaserAge (Windows, 1999)
53		N++ (Windows, 2016)
53		Space Fortress (DOS, 1999)
53		Space Invaders (Windows, 1999)
53		Space Invaders (DOS, 1995)
53		Invaders 95 (Windows, 1995)
53		Alien Invaders 2000 (Windows, 1999)
53		Fighter (Windows, 1995)
52		Zak Zapper (Windows, 2000)
52		Gothicc Breaker (Windows, 2018)
52		Invaders From Neptune! (Windows, 2000)
52		Uncover It (DOS, 1994)
52		Ricochet (Windows, 2001)
52		Abduction Bit (Windows, 2016)
51		3D Mars Mission (Windows, 2001)
51		SDI2040 (DOS, 1993)
51		The Interceptor (DOS, 1993)
51		Space Intruders (DOS, 1993)
51		Alien Attack (DOS, 1993)
51		Gravitar (DOS, 1993)
50		Brickquest (Windows, 2006)
50		Crab Cakes Rescue (Windows, 2014)
50		Bomber: Steep Dive (Windows, 2004)
50		Cash Invaders (DOS, 2002)
50		Lucky Luke (DOS, 1987)
50		Invasion (Windows, 2017)
50		WinKings (Windows, 2016)
50		Tintin on the Moon (DOS, 1989)
50		Tommy's Space Goblins (DOS, 1987)
50		1993 (DOS, 1992)
50		Galaxian (Windows, 2008)
50		Lunar Take (DOS, 1989)
50		Army Moves (DOS, 1989)
50		Rigor Mortis (Windows, 2017)
50		Love Invaders (Windows, 2005)
50		Totally Tiny Arcade (Windows, 2007)
50		Willow (DOS, 1988)
50		Abstractanoid (Windows, 2017)
50		Wings 2 (Windows, 2006)
50		Pang and Bang (Windows, 2018)
50		Super Destronaut DX (Windows, 2018)
50		PC-Fun (DOS, 1985)
50		Air Attack! (DOS, 1988)
50		Astrotit (DOS, 1987)
50		PLEBS (DOS, 1989)
50		Indian Mutiny: Little Sepoy (Windows, 2018)
50		Silly Knight (DOS, 2017)
50		Armorik the Viking: The Eight Conquests (DOS, 1988)
50		Hunchback (DOS, 1988)
50		Space Spirals (DOS, 1988)
50		Natomi Bottle Rockets Extreme (Windows, 2002)
50		Acky's XP Breakout (Windows, 2004)
50		Spac3 Invaders Extr3me (Windows, 2018)
50		Circus Atari (Windows, 2010)
50		Asteroid Pilot (DOS, 1982)
50		Tommy's Lifts (DOS, 1986)
50		Space Commanders (DOS, 1983)
50		3105 A.D. (Windows, 2003)
50		Seaquest (Windows, 2010)
50		Canyon Bomber (Windows, 2010)
50		StarBlade (DOS, 1990)
50		Keystone Kapers (Windows, 2010)
50		Brickquest 2 (Windows, 2008)
50		Horizon Shift (Windows, 2015)
50		Patriot Command (DOS, 1992)
50		l'Abbaye des Morts (Windows, 2010)
50		Jetsons: The Computer Game (DOS, 1992)
50		Invaders Possibly from Space (Windows, 2009)
50		The Castle (Windows, 2016)
50		Crackpots (Windows, 2010)
50		Bandits! (DOS, 1992)
50		Plexu: The Time Travellers (DOS, 1990)
50		Weird Dreams (DOS, 1989)
50		1979: Invasion Earth (Windows, 2017)
50		Star Ship Attack (DOS, 1982)
50		La Corona Mágica (DOS, 1990)
50		Clone Invader (DOS, 1989)
50		Blasturon (Windows, 2008)
50		Tommy's Gorilla Ball Ramparts (DOS, 1986)
50		La Espada Sagrada (DOS, 1990)
50		Zapshot (DOS, 1986)
50		Astrosmash (Windows, 2010)
50		Private Eye (Windows, 2010)
50		Super Destronaut (Windows, 2016)
50		Yars' Revenge (Windows, 2010)
50		UFO (DOS, 1982)
50		Space Armada (Windows, 2010)

Notes: Games similar to The Worlds of Billy, Games like The Worlds of Billy, Northwind Soft, Intense Entertainment Interactive, LLC, DOS, Action, Arcade, Side view, Fixed, Flip-screen, PC, Game Similarities.