From basic cat flaps to cutting-edge smart cat doors with AI prey detection, we've reviewed them all to help you make the right choice.
See our definitive 2026 rankings below.
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Lower the "LOD" (Level of Detail) slider in the graphics settings.
: Edit the configuration file to allow the program to utilize more system RAM. Free Legacy vs. Paid Steam Version space engine 0980 download upd
: Significantly reworked ship physics, including Alcubierre warp drives with nearly-realistic physics and improved docking and landing capabilities.
Origins and purpose
: Added planetary mass objects (planemos/rogue planets), chemical compositions for atmospheres, and a vast database of double and multiple star systems.
: Copy the patch files and overwrite the original files in your installation folder. System Requirements for Legacy SpaceEngine Hardware Component Minimum Requirement Recommended Specification Operating System Windows 7 (64-bit) Windows 10 (64-bit) Processor Intel Core i3 / AMD FX Intel Core i5 / AMD Ryzen 5 RAM 8 GB or higher Graphics Card Dedicated GPU with 1GB VRAM Dedicated GPU with 2GB+ VRAM Storage Space 5 GB available space 20 GB+ (for high-res texture packs) Troubleshooting Common Errors Elias hit Enter
Since version 0.990, SpaceEngine is no longer available as a free download from the official website. It is now sold exclusively through the Steam digital storefront.
Whether you choose to explore the vast procedurally generated cosmos of 0.980 or upgrade to the latest paid version on Steam, SpaceEngine offers one of the most scientifically authentic and visually stunning journeys through our universe available anywhere. The stars await—happy exploring! Free Legacy vs
The path to a reliable AI cat flap is strewn with failures. These projects serve as cautionary tales in a market that's hard to get right.
Overpromised on Kickstarter and failed to deliver. The project appears to be abandoned.
The company behind the original KittyFlap product went out of business due to failures with delivery and customer service.
Don't need prey detection? These cat doors keep out neighborhood cats by reading your pet's existing microchip. Here's the undisputed leader.
For multi-cat homes, the SureFlap DualScan is a fantastic choice. It allows you to set exit permissions for each cat, keeping specific pets indoors while others are free to roam. It's the perfect solution for homes that don't need advanced AI capabilities but still want robust control and security.
For completeness, if you just need a simple, non-electronic flap, these are reliable options for those on a tight budget without concerns about strays or prey.
A durable and popular choice for years, the Cat Mate offers simple 4-way locking (in only, out only, open, locked) to control your pet's access. It's a straightforward, no-frills solution that gets the job done reliably without the need for batteries or microchips.