In terms of game file size, you will need at least 80 MB of free disk space available. Once Upon an All Hallow's Eve system requirements state that you will need at least 80 MB of RAM. The cheapest graphics card you can play it on is an Intel 82945G Express. To play Once Upon an All Hallow's Eve you will need a minimum CPU equivalent to an Intel Pentium 4 2.00GHz.
Once Upon an All Hallow's Eve will run on PC system with Windows XP+ (x86) and upwards. Additionally it has Mac and Linux versions.
Minimum System Requirements
CPU
1Ghz
RAM
80 MB RAM
OS
Mac OS 10.4 and newer
HDD Space
80 MB available space
Minimum System Requirements
CPU
1 Ghz
RAM
80 MB RAM
HDD Space
80 MB available space
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