Doll fighting series games of Rag Doll Software from Italy are very popular. Particles is a physics-based small Adobe Flash game of Matteo Guarnieri's early works, which is simple but interesting, attractive and challenging.

Super Mario Bros. X (short for SMB-X or SMBx) is an excellent fan-made game originally developed by Andrew Sprinks (screen name: Redigit). It blended all the classic elements of Super Mario 1, 2, 3 and World along with many new added practical props, such as Ice Flower, Hammer Suit, Tanooki Suit, Kuribo's shoe, The Billy Gun, Yoshi, and more.

Castlevania Puzzle: Encore of the Night is a puzzle role-playing game in Castlevania series, specially released for iOS (iPhone, iPad, and iPod touch) in 2010, and for Windows Phone in 2011.

If you find you have become interested in that kind of retro cave exploration game with very high difficulty coefficient after playing Spelunky, then La-Mulana (ラ・ムラーナ) will be another good play for you.

PLATFORMANCE : Temple Death is a small indie adventure puzzle game with retro and pixel styles, made by Magiko Gaming in 2012. As the second work of PLATFORMANCE series, added more difficult challenges, deadly traps everywhere.