Are both games actually free?
Yes. There is no price, no account, no email, no launcher, no advertisement and nothing to buy, in either of them. It is one person’s pair of games, put on the internet.
Which one should I play first?
If you grew up on Command & Conquer or Red Alert and want to run the whole war, start with the 2D RTS. If you remember Renegade — or you just want to drive a tank yourself — start with Frontline. They tell the same campaign from two heights, so there is no wrong order.
Do I need to download or install anything?
No. Both are web pages. They run in Chrome, Firefox, Safari or Edge on Windows, macOS or Linux. Frontline needs WebGL, which every modern browser has. Progress is saved in your browser.
Is this Command & Conquer, or Renegade?
No, and neither game is affiliated with the people who own them. They are original games built on the mechanics those games invented — harvesters, a power grid and a sidebar in the RTS; purchase terminals, master control terminals and C4 in the shooter — drawn as if doodled in a school exercise book.
Can I play on a phone or tablet?
They will load, but both want a mouse and a keyboard. A laptop or a desktop is the machine to play them on.
Is there multiplayer?
Not yet. Each game has a twelve-mission campaign and a skirmish mode against AI that plays the same rules you do. An online mode is what the tip jar is for.