F.I.L.F. is smaller scale sandbox type game done right and another example showing that porn game can be pretty damn good even with very basic plot, if adult content is good.
Sandbox game done right meaning you don't have to grind, you don't have to repeat same events over and over. Progression is based on events, not on relationship points, so after doing one event you're unlocking next one. Thanks to this, pacing of the game is nice, game doesn't waste your time, you don't see pretty much any pointless dialogue and you dont have to wait hours before getting into any steamy stuff. You also don't need any hints or a walkthrough (mod). All new events are marked on the map. Simple, but very effective design. Plot is very basic, you're some guy who returns home cuz whatever and... you know. You now live with your mom and sister again. Typical incest stuff. What's good is that there is very little boring incest dialogue like: "we can't do it" or "what will people say". There is a also some side plot about mayor elections but that's pretty meh, and in current version of the game we don't even see any proper resolution to that plot. Cast is very solid, outside of the incest team we have some other, side characters. What is bad, is that one of those side characters (Naomi) has way less content then any other side girl and it's a big waste because she's a very good and appealing character who also serves some role in mom plot. She deserves more screen time.
For quite an older game, F.I.L.F. looks pretty damn good. Especially with a Video Enhancement Mod. Sure, it's not the best looking game out there but it looks very solid. Many newer games theoretically look better technologically but sometimes there are some issues like unnatural, shining skin or dead eyes. Here everything looks just right. Thanks to the mod, animations in upscaled 1080p and 60 FPS look very good. I would say those are one of the best animations i have ever saw in a porn game. Sex scenes themselves also delivers, many times containing few different positions and few different animations. Dialogues during those scenes are also nice. Game offers pretty good number of scenes (more than 60), and the very last scene is pretty much a perfect end for this game. Very lovely, quality family time. Solid music which is always nice.
Overall, F.I.L.F. is a good, enjoyable game. For me more of a 4,5/5 then 4/5. Like i said earlier, amount of content is good for a smaller scale sandbox which takes around 10-12 hours to finish everything. But the game costs 20$ on Steam and for that price tag, and more than 5 years in development, you would expect something longer. For that money you can get games three times bigger than F.I.L.F.. A bit more content, and especially more Naomi content, maybe some epilogue showing our family harem few months later and this would be a 5/5 game.