Draft of GUI Design

The picture above is a draft for the Graphical User Interface (GUI) of my game. The picture is little bit blurry, you can left-click on it to see an enlarged image.

Don't know what should I write for this post. I think the picture is enough clear to explain everything for the in-game interface. However, I should mention something.

The timer is used to countdown for the next wave of enemies. When it reaches to zero (0), the next wave of enemies will automatically appear on the battlefield. The message of enemy description will be shown when the timer countdowns to 15 seconds. It pauses the game for the player to read the message. Player can resume the game by closing the message box.

Player can take the challenge by pressing the button of "Send Next" to immediately send out the next wave of enemies. Player will receive a reward of gold or money by taking this challenge. The number of money depends on the remaining time on the timer. The earlier the player presses the "Send Next" button, the more money the player receives.

There are 4 tabs on the right panel at the bottom of game screen:

Building	-	Shows a list of available towers for the player to build on the battlefield.
Add-on	-	Shows a list of weapon add-ons that gives bonus to the attribute of weapon or adds special effect to an attack and a list of equipments that improves the attributes of any tower.
Ability	-	Shows a list of purchasable active or passive abilities that can be added to any tower to gain a new ability for permanent use and a list of instant abilities that can be used instantly by spending money for each use.
Item	-	Shows a list of items (Item of Add-on and Item of Ability) that are purchased or obtained from the dropping of enemies on battlefield and currently in the player's item bag.