Trenchangle

Tower defense with a tech-tree.  Your fortress is under attack from evil geometry, but you can build towers to defend yourself.  And blast them out of the plane with various weapons.

Each enemy killed will give you gold to buy more towers or upgrade your existing towers.

After each level you can upgrade your skills with a tech tree, where you invest some meta currency that you gain from killing enemies or completing levels.

The game can be played with joystick in port 2 or keyboard control.  It has been developed for PAL systems.

Keyboard in tech tree:

Cursor keys : move selection square

Space/Enter : upgrade node

F1: Save current tree and level completion info to disk

F3: Load from disk

F5: Reset tech tree and regain all meta currency

F7: Swap tech tree with a shadow copy

F2: Switch between drive 8 and 9

T : Toggle music / sfx

Keyboard in defense mode:

Cursor keys : select tower or menu item

Space/Enter : enter menu / select menu item

X : Exit menu

W : Fast forward to next wave

A : Build arrow tower

L : Build lightning tower

F : Build fire tower

M : Build mortar tower

B : Build blizzard tower

Z : Build lazer tower

U : Upgrade tower

P : Pause attack

H : Heal fortress

Music by Crisps