Icy Tower 1.3.1

29 October 2005 is the patch date in the German version table. Search volume still clusters on this number, and on the filename icytower13_install.exe, because character packs and a PlayStation Vita port both expect this exact tree.

Two filenames, one patch

icy.pl offers an installer, a loose package, and a 276 kB patch you drop onto the 6 September 2005 build (plain 1.3). Their installer name keeps the dots: icytower1.3.1_install.exe, listed around 2.52 MB. The community RAR on archive.org renames the same generation to icytower13_install.exe. A local hash of that file is SHA-1 a00aa6ebc4c37fac7c44de91671477ef7e32389a, and the Vita port’s readme demands that same digest before it will unpack assets. I trust the hash match more than the shortened filename.

What the engine notes record

The Vita port’s readme, written while reimplementing this patch, describes a 50 Hz simulation inside a 640 by 480 frame, eleven floor types, a floor sign every ten storeys, ten combo shouts running from GOOD up to NO WAY, and three high-score tables. Replays use the ITR130 header and the .itr extension. Those replays are the ones the Vita build claims it can trade with a PC. MyAbandonware’s comment on this patch is blunt: it attracted the most mods. Custom characters land in a characters folder. Replacing data.dat changes the whole picture set, which Polish players call a skin rather than a character.

Parent version 1.3, six weeks earlier, shortened floors above 1000 and closed the ghost-floor fall-through. The October patch does not re-open that bug. Fun mode on this generation is the lets.go file plus a deliberate fall at floor 22 and a replay saved under the name fld or funmode. That is a file ritual, not a shop code.

Why not jump straight to 1.5.1

1.5.1 is newer and fine for a plain climb. Packs published against ITR130 will refuse a 1.4 or 1.5 replay header. If a tutorial tells you to paste a folder named harold_the_homeboy, you are in 1.3.1 country. Install 1.3 from September only when you still need the small October patch on top. The download guide’s anchor for this build is the 1.3.1 section, and the Vita FAQ entry repeats the hash so console owners do not grab the September installer by mistake.