スチムーにもあった。https://store.steampowered.com/app/70300/VVVVVV/?l=japanese
senooken JP Social is a social network, courtesy of senooken. It runs on GNU social, version 2.0.2-beta0, available under the GNU Affero General Public License.
All senooken JP Social content and data are available under the Creative Commons Attribution 3.0 license.