Don't show games more than once in grid, don't show missing games in grid, closes #1013 and https://itch.io/post/73405
Don't show games more than once in grid, don't show missing games in grid, closes #1013 and https://itch.io/post/73405

itchio/itch,itchio/itch,itchio/itchio-app,itchio/itchio-app,leafo/itchio-app,itchio/itch,itchio/itch,leafo/itchio-app,itchio/itchio-app,itchio/itch,leafo/itchio-app,itchio/itch