I am creating a Dungeons and Dragons 4th Edition Character Creator / Arena.
It is underdevelopment, but here is what I have done so far:
1) You can create a 1 vs 1, 2 vs 1, 1 vs 2 death match game. You make the initial selections by entering numbers on the bottom right textBox.
2) There are no feats nor classes yet and only level 1.
3) There are bugs...

Basic controls:
1) You can move your character with the "Move" button. Then you use the "arrows" to move. You stop with the "space" bar. You can shift (equivalant 5-foot step) by pressing "S" and then moving.
2) For all other actions you press the "Actions" button. Typically you choose from the comboBox and press Use to use them. The basic melee/ranged attacks are under the "At Will" button. To switch/equip weapons you go to Actions->Simple->Switch weapons.
3) In order to target somebody you double click on them. You can also target whatever square you want by pointing with the mouse and pressing enter (which should hit the "Manual" button. If not use the tab to give control to that button).
4) In order to place a character or to teleport (fey step for Eladrin's) you again use the above method.
5) Direction buttons and point of origin are q,w,e,a,...,c for Dragonborn's "Dragon Fire" Encounter power.
6) NOTE: when creating human or dragonborn you have to make some selections. Again you enter things on the bottom right textBox.

Rules:
1) As in 4th Edition, maybe some details I missed. Only, you cannot move diagonally, distance is counted vertically/horizontally. You don't "see" the squares.

End of game problem:
1) Well, I think you have to kill everybody in order for one character to be the winner, so you might have to eliminate remaining ally.

Bugs:
1) Dead characters become white/grey. Unconcious ones pink, but that doesn't seem to work. So if somebody doesn't get its turn he is probably unconcious.

Report Bugs found! Also, as you play, check stats and hp's to see if everything works ok.

Any suggestions are welcome. I will one day (in the far far feature) finish this game. I ll post the feature worthy versions here. The second version will have classes and will allow level up. Then I will make feats. And at last I ll write more and more class powers (they are endless...). If a bug is reported I ll fix it and post again the working code by EDITING this one, so I don't pollute the topic.

NOTE: I upload the .exe file (rename and get rid of the .txt). I hope nobody minds. If anybody is interested in helping with the game, I ll also post the project.