Gravity 3.3 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. You can launch Gravity on Windows XP/Vista/7/8/10/11 32-bit. The actual developer of the free program is Uranisoft.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The most popular versions among Gravity users are 3.3, 3.2 and 3.1. The default filenames for the program's installer are DXB.exe, GRAVITY_Nu_200_EDIT.exe, GRAVITY_Nu_200.exe, GravityBackup.exe or Gravity3_Updater.exe etc. The software lies within System Utilities, more precisely Plugins Addons.
From the developer:
Gravity is a program to simulate the path of move for bodies (i.e. objects with mass) altered by the gravity drive between each other, i.e. a gravity simulator.
By using this program, gravitational attraction may be better learned. From the simplest orbit to complicated galaxy crashes, there is a wide variety of motions by gravity.
You may want to check out more software, such as Gravity Pack for Pocket Tanks Deluxe, Gravity Force Lab or MBSS Gravity Wells, which might be related to Gravity.