95		Mini Spheres (Windows, 2004)
64		Pegs (Windows, 2005)
64		Power Pegged (Windows, 2003)
64		PegIt (Windows, 2005)
62		Knights (Windows, 2016)
62		Qop 2 (Windows, 2017)
62		Turn Off (Windows, 2001)
61		Maize Quest (Windows, 2000)
61		Qop (Windows, 2017)
61		Pegopolis (Windows, 2000)
60		Block-O-Mania (DOS, 1989)
60		Peg Solitaire (DOS, 1990)
60		Crates (DOS, 1991)
60		Samotnik (DOS, 1991)
60		A Snake's Tale (Windows, 2017)
60		Swim Out (Windows, 2017)
60		Poof (DOS, 1994)
60		Loopy (DOS, 1994)
60		Tommy's High IQ (DOS, 1987)
60		BrainBreaker (DOS, 1991)
60		Aah Little Atlantis (Windows, 2010)
60		Relentless Logic (DOS, 1985)
60		Peg Solitaire 95 (Windows, 1996)
60		Pipes! (Windows, 2017)
60		2048x2048 (DOS, 2016)
60		Drag-n-Drop Solitaire 95 (Windows, 1995)
60		Flipper (DOS, 1983)
60		Switch (DOS, 1982)
60		Ronnie's Resort (Windows, 1997)
55		DROD: Journey to Rooted Hold (Windows, 2005)
54		Diabolika 2: The Devil's Last Stand (Windows, 2003)
53		Caravel: Deadly Rooms of Death (Windows, 2002)
52		Slayaway Camp (Windows, 2016)
50		Deadly Rooms of Death (Windows, 1996)
50		Diabolika (Windows, 1999)

Notes: Games similar to 1Check, Games like 1Check, Windows, Puzzle, Turn-based, Top-down, Fixed, Flip-screen, Board game - Peg solitaire, PC, Game Similarities.