It's the year 2081 and servant robots have become commonplace, though too expensive for most people. In that same year, a large abandoned Sinclair warehouse is discovered with thousands of mint, working ZX81s and some genius decides to build a line of cheap and affordable robots using them: The Zeddytrons. Based on ZX81s and huge rampacks (by 2081, rampack science has advanced significantly) the Zeddytrons become massively popular and the world fills with them ... until the unexpected happens! Wobblying rampacks cause the Zeddytrons to malfunction and declare mankind an obsolete species! Your mission is to move through 50 waves, blasting Zeddytrons, avoiding undestructible Zeddyhulks and rescuing human survivors! You can control your player using AWSD to move and JIKL to shoot simultaneously in 8 directions. Otherwise, you can use OPQAM / Cursor / ZXPand+ Joystick to move and shoot by pressing fire and the direction in which you want to shoot. Good Luck!