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Conquer GS

Year	2026
Publisher	Walter Tengler
Developers	Walter Tengler
RAM Requirement	1 MB
Control	Mouse, Keyboard
Other Requirements	ROM 01 or ROM 03. 800K ProDOS disk that boots into the game. A mouse.
System 6 Compatible	Yes (also boots its own ProDOS disk)
Hard Drive Installable	Yes
Release Status	Free download, source on GitHub. v1.0.2 (28 October 2026)

About

Conquer GS is Walter Tengler's real-time strategy game for the Apple IIgs, first released on 28 October 2026. It is written from scratch in 65816 assembly, in the spirit of Command & Conquer. You build a base, harvest ore, train units and destroy the enemy base, at 60 frames a second in Super Hi-Res 320 mode, with Ensoniq weapon sounds and two original music tracks.

The base is a command center, power plants, barracks, a war factory, refineries, a radar center, gun turrets and guard towers. Harvesters mine ore that grows back and unload at the command center or a refinery. Four queues build structures, infantry, vehicles and harvesters at once, up to five of a kind, and the barracks and war factory take rally points. Tanks, buggies, soldiers and rocket soldiers each do more or less damage to infantry, vehicles and buildings. The computer opponent has its own base and harvester, attacks in waves, and rebuilds what you destroy, on easy, normal or hard. The four maps are Green Valley, River Crossing, Twin Lakes and Stone Pass, with fog of war. The battlefield scrolls at twice the screen size, and a radar center shows the whole map.

The disk is an 800K ProDOS image (ProDOS 2.4.3) that boots straight into the game. It needs a ROM 01 or ROM 03 IIgs with 1 MB and a mouse. The same files also run from a folder on a hard disk by launching CONQUER.SYSTEM. Version 1.0.2, the one hosted here, adds a HOW TO PLAY button on the mission setup screen (three pages, NEXT and BACK) and moves pause to Esc, which opens a panel listing the controls. The game, graphics and music are Tengler's. The weapon sounds are CC0 recordings from OpenGameArt. He tests it in MAME and is asking for reports from real hardware. The release page has the current disk, and the source is on GitHub.

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