Gameduino 2 with 4.3" 480x272 Display and Touchscreen

Gameduino 2 is a shield that adds a bright 4.3 inch touchscreen, an embedded GPU, headphone jack, accelerometer and microSD slot to your Arduino - or anything else with an SPI interface. Everything you need to create compelling games – right in your hand.
Sound output is via an amplified headphone jack. The system supports a selection of built-in samples and instruments, and can also play samples from video memory, at up to 48KHz.
The sound and graphics are definitely old-school, but thanks to the latest FPGA technology, 

Here are some handy stats:

• Video output is 480x272 pixels in 24-bit color
• OpenGL-style command set
• Up to 2000 sprites, any size
• 256 Kbytes of video RAM
• Smooth sprite rotate and zoom with bilinear filtering
• Smooth circle and line drawing in hardware - 16x antialiased
• JPEG loading in hardware
• Built-in rendering of gradients, text, dials and buttons

The FT800 graphics co-processor can handle media in several formats to reduce the memory footprint:

• Decodes JPEGs directly for lossless image loading, decompresses
• Audio samples can be 8-bit linear, uLaw or ADPCM

Built into the GPU’s ROM are:

• High-quality fonts in 6 sizes
• Samples of 8 musical instruments, playable by MIDI note
• Samples of 10 percussion sounds

And of course you can load your own fonts and audio samples into the 256KB RAM.