KSP is a great, flawed game. It can be insanely addicted and habit-forming, but also incredibly frustrating. Don't believe people when they say it's a game for everyone; it really isn't. What it is is a game for the dedicated perfectionist, someone who is willing to devote a large amount of time to mastering a very specific set of skills in order to succeed. Your first few hours with the game will most likely to excruciatingly difficult, and full of trial-and-error moments where you have literally no idea what you're doing wrong. But once you hit your groove and master the basic mechanics of the game, it can become incredibly rewarding. My advice to newbies is to go look at the wiki first. Join the forums. Look up the reddit. Immerse yourself in the actual community of the game before playing. Also go and subscribe to Youtubers like Scott Manley, who give brilliant tutorials on the basic game-play and provide inspirational examples of what you can accomplish in it. In many ways, playing KSP is like going on an international trip. You have to do a LOT of tiresome busywork - ordering tickets, checking passports, organizing luggage, learning local laws, etc - but it's all in preparation for a unique experience. Prepare well and you'll be left with an unmatched sense of accomplishment. Prepare badly and you'll be hitting that Refund button before the ten hour mark.
Homeworld: Cataclysm is one of the best games I've ever played. Essentially an expansion pack for the original game with a whole new campaign, Cataclysm ups the fidelity of Homeworld, improves the graphics and adds a vitally-needed Time Acceleration feature to the classic formula. The plot is a deliciously dark and creepy Cosmic Horror Story, with great voice acting and emotional performances that make it surprisingly easy to connect with the otherwise faceless and nameless command crew of the Mothership. The tragedy of Cataclysm is its status as a lost gem. It has been years since the hard copy release, and getting it to run on modern operating systems has been a nightmare. This GoG release is absolutely stellar in my opinion, and proof that the best forgotten gems can be brought back to life by this platform.
Rage of Mages is a pretty decent RPG with a nice graphical style to it and a fairly interesting plot. I played it around when it was first released, and can safely say I wasn't disappointed. While not a genre-shattering masterpiece by any stretch of the word, RoM has a lot of variety. There are plenty of spells and dozens of item types to equip your heroes with, not to mention a broad selection of enemy types to battle. Missions are fairly well scripted, with lots of interesting events and unconventional pathways to explore in order to reach your assigned goals. If you're a fan of this kind of RPG, RoM and its sequel are quite enjoyable experiences. Just don't expect them to set your world on fire.