Well, the content of what you find immersive is highly subjective and I can't really suggest one thing over another if I don't know what exactly you are looking for.
However, as far as an objective measurement of immersion itself, almost every tile your character walks on has a text blurb attached to it--add that to the actual events and character interactions and this game has way more text-immersion than CoC does. The quality of writing, from what I've read, is a lot higher in comparison. As far as player agency, you have greater control over your character as the primary focus is on exploration rather than randomized adventuring. As far as the more "gamey" elements of the game: if CoC is more like a dice game, then TiTS is more like a card game. Whereas the dice game is about pure chance, the card game is a bit more calculated. As a player, you can button mash your way through CoC, but in TiTS, you might have to pause, think, and adapt to certain situations.
For themes, TiTS is set in a sci-fi setting, so it takes on a lot of the symptoms many sci-fi projects have (due to attaching "science" in front of it), such as techno-babble (new vocabularies) and complex systems (social-economic politics, traditionalist vs progressive ideologies), and these things can be very overwhelming for a person not used to the sci-fi genre (which is probably the reason why the codex was added to the game to help the player understand the world around their character)--and for some, that's a huge turn-off. Medieval/High fantasy genres, like the one CoC is set, are a lot easier to grip with since most content for that kind of setting is readily understood, or is ambiguous enough to not need extra explanation, making it easier to immerse oneself into. Sure, while nanomachines can be the magic and social status defines who are the divine beings, sci-fi stuff usually has a lot more footnotes than high fantasy stuff on the whole.
Like Magic Ted mentioned above, Mhen'ga does need some more work so play around a while after getting passed that planet and see if you think its for you. Every planet has it's own theme and set of characters and events with different objectives, back stories, and kinks. Part of the exploration process is unraveling these things as you go and hunting out what appeals to you--or accepting it all if you're not picky. Keep in mind that the game isn't near completion yet, so you might not find anything you like at all in its current form.
So far as general content is concerned, the game in it's current form (as of public build v0.6.13), you can get:
- 1 ship to travel with
- 7 planets/destinations (4 main game, 1 side, 2 event-related):Starter location with stores, a bar, red-light district
- Jungle planet with some residences, a medical facility, explorable jungle, bee people, tentacle amazons, parasitic sticky notes, horny plant ladies, pussy snakes (in two varieties)
- Junkyard planet with some residences, mad scientists, explorable wasteland, robots, goo girls, rust monsters, horny jackalope-bunny herms, kobold/goblinoids
- Ant planet with an ongoing civil war, explorable battlefield and underground caverns, bugs everywhere, bushels of sentient cocks
- Hu-cow planet with cowgirls and bull guys, explorable farmland, milkers, ice cream parlor and gym
- Event planets: one for Christmas, one for Halloween
[*]A bunch of side quests and miniquests, though not all sex-related
[*]4 possible followers total, each with their own unique follower content (1 omnigender, 2 females, 1 male/female/custom)
[*]About 6 or 7 customizable NPCs (possibly more)
[*]Content (though may be limited to certain NPCs) for submissiveness, dominance, hypnotism, whoring/sluttery, exhibitionism
[*]Sexual parasites (drug addiction in the backer's build, and possible "sexy STDs" in the future)
[*]Illegal drugs and sex toys
[*]Numerous races and race variants and transformation items to make changing into one possible
[*]Money is a valuable resource since everything costs money and some events are money sinks (so far only quests and some enemies/events will provide money, but there may be a job/investment feature or faction perks in the future)
[*]Tile-based map system--for exploration, of course
[*]Complex combat and status system
[*]Simple messenger/mail system
[*]Detailed pregnancy system
[*]And possibly other things I might have left out on this list...
Hope this helps!
