Company Olga Bilash created these great apps:
Find the Difference - Puzzle Game by Krypton Games, Find the Differences Rooms, Find Differences - Puzzle game, Find the Differences Puzzle, Find 6 Differences, Find 10 Differences Game, Find the Difference 100 levels, Find the Difference 150 levels, Find Differences New Year, Find the Difference 150 levels 2, and others..