Here's the Legend of Edgar version 1.17, a challenging platformer game by Parallel Realities ( http://www.parallelrealities.co.uk/p/legend-of-edgar.html ).

(from the website)
Story:
When Edgar's father fails to return home after venturing out one dark and stormy night, Edgar fears the worst: he has been captured by the evil sorceror who lives in a fortress beyond the forbidden swamp.

Donning his armour, Edgar sets off to rescue him, but his quest will not be easy...

Features:
Platform game
Large levels with different environments
A variety of weapons
A persistent game world that can be travelled through
Boss Battles!
Lots of sound effects and music tracks
Joypad support with configurable controls
Configurable keyboard support

Default (reconfigurable) Controls:
D-Pad/A-Pad: Movement
A: Attack
B: Block
X: Use selected inventory item
Y: Use/Talk/Pull item
L-pad: jump
R-pad: next inventory item
SELECT: Exit/show menu/pause
START: Select option in menu, show inventory in game
Slider-Dn: pause

Youtube clips:

gameplay



boss battle



Source code changes:
downscaled to 320x240
numerous speed optimisations
changed keymapping and default keys
enlarged fonts
reconfigured menus
fixed bug causing menu crash

Link to opk:
https://drive.google.com/file/d/0BwYi4RGX-HSadktLNS15VlNWV2M/edit?usp=sharing

Link to modified source code:
https://drive.google.com/file/d/0BwYi4RGX-HSaLVNiOW94T0JUcnM/edit?usp=sharing