Known Bugs

The Blaster Bomb Bug - CE

On the Gold/Collector's Edition of X-COM, you had to be damn careful - why? Because, for some reason, Blaster Bombs refuse to travel directly upwards. They don't mind moving diagonally upwards, but they -hate- moving straight up. So, with this in mind, you can now avoid blowing yourself up with blaster bombs! :)

80-item Limit

When loading up your Avenger for a massive UFO assault or arming soldiers for a Base Defense from your overflowing stores, you will likely hit this limit.

You only get a max of 80 items, and you don't get to choose which ones, so you may end up with 80 clips and no rifles for the base defense, or may not be able to get your hands on that dropped blaster launcher during the UFO assault.

The solution? Timely housekeeping. Sell off your spare personal equipment. See our handy Spring Cleaning Tips, and also Managing the Item Limit for ideas on stocking Skyrangers.

The trouble with Mines (general)

The armed states for Proximity Grenades in both UFO and TFTD are NOT stored in savegames. More information to come.

TFTD Research Tree Bug Avoidance Guide

TFTD's research problems are more of a serious oversight than a true bug. More of a pain, really. Nevertheless, a variation of NKF's TFTD Research Tree Bug Avoidance Guide, coming soon - free time permitting.

Jasonred: I'd say it CAN easily become a true bug. Tech items can literally become impossible to access and will never appear in your campaign. In some cases, making it impossible to complete the game.

For now:

• NEVER research the Tasoth Commander. There's no reason to, as far as I can tell.
• ONLY research Deep One Terrorist AFTER you have completed Plastic Aqua Armor and Ion Beam Accelerators.
• DO NOT research M.C. Lab unless you have AT LEAST one MC Reader in storage.
• You MUST have at least one "Sub Construction" in storage before completing research on Zrbite and/or Transmission Resolver.

Other than the MC reader one, any of the above would make it impossible to finish the game.

-compiled from NKF's guide.

Mountain Map

• Skyranger ramp can be damaged by explosives on this map.
• UFO hulls can be damaged by explosives on this map.

Base Disjoint Bug

Base facilities built along the right or bottom edges of the base building area may end up being cut off from each other by dirt walls, a bug in the routine meant to keep soldiers from accidentally exiting the map edges during Base Defense missions. The dirt walls can be knocked down by Blaster Bombs during combat but are otherwise unbreakable.

NKF illustrates this in a pretty picture for you. XCOMUTIL corrects this problem.

Green Text Bug

There are a few bugs in XCOM, especially early versions, that can build up and make the game unstable enough that it crashes and prints out a screenful of green 40-column text, essentially debug or memory dump information useless to you.

One fairly consistent cause is saving the geoscape game during a UFO standoff, with the interceptor window minimized to an icon. The next mission after that point will likely dump you to the green text screen, and perhaps an earlier battlescape mission instead of the proper one.

-- I was able to recover from this state by quickly sending in another interceptor (Firestorm) to take over, which allowed my first interceptor (Avenger) to break off and go home without crashing the game again. After the shootdown I overwrote the buggy savegame. --JellyfishGreen 03:11, 22 Aug 2005 (PDT)