This batch is devoted to the old PC add-on disc: sprawling level collections, scenario packs, and the odd tool that mattered most once you were already deep into a favorite game.

1001 Nights of Doom

the thousand-map shooter compilation takes the unabashedly excessive route, gathering maps for DOOM, DOOM II, and Wolfenstein 3D alongside editors and extra sound effects. It is a library rather than a campaign, so the pleasure lies in loading one more unfamiliar arena and seeing what its creator had in mind. Which of those three shooters would you most want to explore through a pile of fan-made maps?

1942: The Pacific Air War Scenario

the Pacific Air War scenario disc adds land-based American and Japanese fighters, with missions set around the Philippines and New Guinea. The P-38, P-40, P-51, Ki-61, Ki-84, and N1K make for a notably broader hangar, while the supplied description also points to two-player modem missions. Would you take the P-51 into a head-to-head dogfight, or try one of the Japanese aircraft first?

Abyss of Pandemonium

the unofficial Quake sequel presents ten single-player levels, six deathmatch maps, six enemies, four weapons, and a power-up as a continuation beyond Quake’s official mission packs. Its Dark Reaver Legond setup is gloriously direct: another dimension has been conquered, and now the returning villain wants the player dealt with. The campaign material sounds like the main event, though those deathmatch maps deserve a proper local-network rematch.

Aces of the Deep: Expansion Disk

the Aces of the Deep add-on brings six missions to the submarine sim, including Mediterranean operations and a prototype Type XXI boat. The new depth and buoyancy readouts sound welcome in a game built around careful positioning, and the alternate torpedo options give the Type XXI a distinct assignment. Would you rather stalk a convoy in the Atlantic or thread a submarine through the Mediterranean?

Aces of the Pacific: Expansion Disk – WWII: 1946

the 1946 Pacific expansion imagines a Pacific war continuing beyond 1945, filling its hangars with aircraft such as the F7F Tigercat, F8F Bearcat, P-80 Shooting Star, J7W Shinden, Kikka, and Ki-83. The speculative campaign angle is a fine match for an aviation sim, especially when it puts early jets beside late-war propeller designs. Which matchup would you stage first: P-80 versus Kikka, or Bearcat versus Shinden?

Aftershock for Quake

the first Aftershock package collects single-player maps, deathmatch arenas, a level editor, and a hints-and-cheats compendium for Quake. The maps are the real draw, with close corridors and open combat spaces offering two sharply different kinds of Quake fight. Put its editor beside the game’s other map tools and you have a very particular 1990s evening planned.

Aftershock Toolbox for Quake

the Aftershock Toolbox disc goes wider with 54 standalone Quake maps, QuakeC patches grouped around monsters, weapons, and miscellaneous changes, plus Worldcraft and Thred. It also preserves read-me files and author credits for the included material, a welcome touch on a compilation disc. Would you start by testing a monster patch, or open an editor and build an arena of your own?

APLC32

the Flight Simulator adventure compiler is a narrow but recognizable piece of the old flight-sim workflow, compiling adventure source from Flightplanner, AETI ProFlight 2000, or Approach Controller into a Microsoft Flight Simulator adventure file. It has no cockpit spectacle of its own; it sits between scenario planning and the simulator. Anyone who used one of those planners will remember whether that final compile step felt routine or nerve-racking.

Are You Ready & Alert

the Command & Conquer level disc is another monument to quantity, listing more than 1,000 unofficial Red Alert levels and over 300 for Command & Conquer, with editors and utilities attached. That is not a neat expansion campaign but a formidable stack of battles for players happy to browse, test, and tinker. Which game would get your attention first: the original Command & Conquer or Red Alert?

Battle Isle 2: Scenery CD – Titan’s Legacy

the Titan’s Legacy scenery disc expands Battle Isle 2 with new maps, terrain types, and objectives around Val Haris’s struggle against Argok Kraal and STAG. Volcanic vents, toxic swamps, rescue missions, sabotage jobs, and timed relief efforts give the scenarios a welcome change from simple annihilation orders. A turn-based campaign earns its keep when the map makes you reconsider every route, and this one sounds determined to do so.

Of these add-on discs, which would you reinstall for a weekend: a Quake map collection, an alternate-history flight campaign, or a bottomless stack of Command & Conquer battles?