Graphical game interface

The main buttons and symbols on the screen:

1 - Opens the pause menu in which you can restart the game, end the game or go to the main menu.

2 - Button to toggle detailed map display mode, showing you tile bonuses, building improvement levels, aiming modes, etc.

3 - Number of the current wave of enemies.

4 - Number of lives of the base (a game is lost if enough enemies get to the base).

5 - Number of coins (can be earned primarily by exterminating enemies, calling waves early or by using 'Bounty' modifiers; coins can be spent to build or upgrade buildings).

6 - Score

7 - List of quests. You can click on the title to maximize / minimize.

8 - Abilities buttons (you need to play through the game a little so that they appear). It is indicated near each skill how many times it can still be used for this game. Select ability by clicking on it and cast the ability by clicking on chosen destination on the map . If you click on the ability icon again, it will be deselected. The lightning bolt icon on top of the abilities bar shows how many energy you have. Energy is used to cast abilities. Energy cost of each ability is displayed by white squares near ability icon.

9 - Button for calling next wave of enemies immediately. Button is only active when the last enemy of the current wave spawns. Hold the button for a few seconds to set to 'Auto', which calls the next wave as soon as all enemies from the current wave are destroyed (can be changed to call as early as possible in Settings). Auto-call is disabled when there are still enemies remaining from 3+ waves prior.

10 - Bonus coins for calling the next wave early. The maximum number of coins for the wave is multiplied by the proportion of enemies still alive, and by the proportion of the time left until the next wave is called. Until you kill the first enemy of a wave, you will get 0 coins, so on higher waves auto calling mode will not get you many coins. Calling the wave also scores 50 times this number in points (prorated by portal difficulty multiplier).

11 - Time left before the next wave arrives.

12 - Game speed control button. It has 4 positions - paused / 1x / 2x / 3x. To pause, hold the button for a few seconds. During this pause, you can still interact with the game as normal (each action executed at this 'zero speed' will progress time by a single 'frame'). The speed setting purely modifies how fast the game runs, nothing else is affected.