Spectra Defense

HOW TO PLAY

1. Pick a prism tower from the sidebar (or press Tab to cycle, Enter to place). Towers go on any cell off the glowing path — the ghost ring shows their range.
2. Press Space to send the next wave. Kills pay bounties; clearing a wave pays up to ¢40 interest on your banked credits, so saving is a strategy. Sell towers back for 70% of what you invested.
3. Match towers to threats: sniper rails pierce warden armor with true damage, splash arcs short aegis shields, slow fields can't touch flying skimmers, and amplifiers boost every neighbor in range.
4. Select a placed tower to upgrade it twice — the second tier branches (A or B) and the branch locks in. Press F or the HUD button to run at 2× speed.
5. Campaign spans three maps of six waves; endless generates seeded waves forever; puzzle gives you exactly ¢300 with no interest. If a creature reaches the exit you lose lives — at zero, the grid falls.

Controls

• Move cursor / aim pointerArrow keys / WASD · Mouse / touch · D-pad / left stick
• Place tower / selectEnter · Click / tap · Gamepad A
• Upgrade branch A / BU / I · Sidebar buttons
• Sell tower (70% back)X · Sidebar button · Gamepad Y
• Send next waveSpace · Sidebar button · Gamepad Start
• Toggle 1× / 2× speedF · HUD button · Gamepad LB
• DeselectBackspace / Q · Gamepad B
• PauseEscape / KeyP · Gamepad Start

SETTINGS