nds4droid by jeffq is a free, open source Nintendo DS emulator written for Android smartphones. It is based off of the excellent emulator DeSmuME. The source code can be found on sourceforge. Read more
PPSSPP is a PSP emulator written in C++, and translates PSP CPU instructions directly into optimized x86, x64 and (soon) ARM machine code, using an efficient JIT compiler. PPSSPP can thus run on quite low-spec hardware, including stronger Android phones and tablets, as long as there's support for OpenGL ES 2.0. Read more
nds4droid by jeffq is a free, open source Nintendo DS emulator written for Android smartphones. It is based off of the excellent emulator DeSmuME. The source code can be found on sourceforge. Read more
In Blockaid by Jayenkai you have to guide a ball to collect the green blocks, whilst avoiding retreading the same path. Floor tiles will slowly reset as you move, but try not to create a blockade along the way. Additionally, there are randomly appearing walls, and spikes, which will attempt to thwart your efforts. Read more
In OneDee by Jayenkai you have to run through halls collecting all the coins, whilst Keeping away from all of the dangerous red blockades that aim to thwart you on your quest. Avoid the oncoming bullets by using your trusty shield. How far can you get? Read more
In Puzzobomb - Endless by Jayenkai you have to match the colored blocks before the gameplay area overflows. Hold onto a Bomb block to blow it up, along with the 4 surrounding tiles. Read more