In my opinion
Libris Mortis is very easy but the character system and the maps are both very good. Maps contain secrets ways to unlock some types of characters and so on. Make what you want with that.
It's a mission-based game. You play as a necromancer and the story works, by the way. Basically if you don't care that it's easy then I highly recommend it, otherwise I don't know. It's a full length game and it's free.
PicoQuest may have already been mentioned here. It plays like Hero Quest, basically, simple combat, detect traps. It's very simple but there's a free verion containing a good part of the game.
- I've already talked about
Cursed 2 in other parts of the forum but it's very good and I highly recommend it, so just in case it's an adventure game similar to Uninvited, with timing-based combat and combat stats to upgrade as you wish on level ups. It's a full length game and it's free and the third episode might get released with year.
- On the same vein, the less visually appealing but very cool otherwise
The Implementors' lunch is an adventure game with combat and stats which in this case can sometimes serve a purpose outside combat, nothing exceptional on that front but as an adventure game it's a good game. It's a full length game and it's free and just like the previous game I liked it more than the average recent commercial adventure game I've played.
Orcish Rage is a series of 2 real-time Strategy-RPGs. In the first game you take a series of mission where you control a bunch of heroes followed by units you don't control. You recruit units on the go and clicking on things can unlock things (items which give bonus or new units). The game is cool. The second game is more ambitious, there's a real equipment system for heroes, you get to control several different groups of heroes that you can move on a world map and there's management, you control towns where you build buildings and which can get attacked and the game follows some sort of campaign. Both games are free.
- In
Corner Quest each level is a square world map.
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Dead Crowd is a small turn-based party-based game where you walk across zombies.
- Not sure the game has anything to do here but as I'm here
Rabbit's Quest is a very good top down Zelda thingie. One of the good point is that it's harder than average but everything is good about it, the puzzles and secrets here and there, the exploration sequences (often as hard as the boss fights, I like that) and the boss fights, highly recommended given you like this sort of things. It's a full length game and it's free.
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Lunarrota is a short, paid, text-based adventure game (with a visible map) where getting strong enough items to kill some enemies are part of the thing and there are some sequences that you can choose to solve in different ways.