Portal might be a bit more popular than Google Earth Flight Simulator. We know about 1 link to it since March 2021 and only 1 link to Google Earth Flight Simulator. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I'm sure you already know, but Google Earth's actually had a really basic 'flight simulator' built in for a while now: https://support.google.com/earth/answer/148089?hl=en In gaming or technical terms, it's not much good as a game per se (or at least, wasn't when I last tried many years ago) but is still quite fun when playing around familiar areas, getting an idea of various flight times. - Source: Hacker News / about 3 years ago
There's nothing to buy, it's free and already included with Portal 2. Source: over 2 years ago
FlightGear - The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. It also simulates space flight in Earth's orbit. It's flight dynamics engine (JSBSim) is used in a 2015 NASA benchmark.
Antichamber - "A game with half of the attention to detail and imagination Antichamber has would be a smash hit - this bare-bones first-person puzzler is one of the most thought-provoking, engaging, and challenging video games ever developed.
X-Plane - The world's most advanced flight simulator just got an upgrade. Download the free demo today for Windows, macOS, & Linux.
Quantum Conundrum - Quantum Conundrum is a First-person Perspective game with strong Sci-fi, Puzzle-Platform, and Single-player elements published by Square Enix and developed by Airtight Games.
Space Shuttle Simulator - Space Shuttle Simulator is developed by Thetis Games and Flight Simulator.
Mari0 - What happens when you mash Super Mario Bros. and Portal together?