Slightly above average as a game, serviceable story, and good porn.
As a game, VoidBound is a step above bog-standard RPGM games, which is nice, but also not truly impressive. It has its stronger sides, but there is a plethora of unpolished aspects as well. The initiative-based turn system is fairly good, but that's the only gameplay element that I like without any ifs or buts. Oh, wait. Having a combat system with a spatial element is better than not having it, for sure, but because battlefields —at least for now— have identical size and are completely devoid of obstacles, the end result is not some deep tactical combat. The stat system looks interesting, but Caly (the protagonist) does not gain experience, only plot-tied power ups and upgrades. You can't really plan some big upgrades or builds in advance, which takes out a lot of gratification from the character growth. Level design is generally good mechanically, and pleasing aesthetically, or even beautiful, but some custom-drawn elements lack clarity what is traversable and what is not. The interior of one particular bar is especially bad at telegraphing where the fuck the exit door is. The stealth element of navigating the world is well-designed, but unfortunately the game incentivizes you to wipe out all the packs to collect all the loot. Speaking of loot, why the fuck do the enemies in the dream level drop real money? And why don't you gain a single new ability or perk for beating said dream level? Wouldn't that be a much more appropriate reward?
The battlefuck element is almost entirely passive, at least as of version 0.5. The heroine gets her suit torn, which eventually provokes a mook to grab and lewd her, which raises the pleasure meter. Since orgasming in combat invokes basically no penalties whatsoever, the biggest danger to being grabbed and molested is actually enemies who ignore heroine's predicament and continue unleashing conventional damage. Those bastards. The pleasure meter is persistent between different instances of combat with some slight decay, which is very good, but it also completely ignores any lewd events that can happen in-between. Caly relaxes in a hot spring, and paddles her pink canoe? Cool, her HP is restored, her ammo is restored (wait, what?), but her pleasure meter is not reset to zero? WHAT THE FUCK. (edit: the dev promised this is/will be fixed, but I have not verified this yet)
The real sore point is the UI. It's sluggish (I don't want animations, I want fluidity) and badly structured. Managing weapon upgrades involves navigating an awkward multi-tiered menu when it could be done in one flat screen. Just... no. Me no like. RPGM at its "finest". Also no journal, coming back to an old save with an unfinished quest is going to be a pain.
This may feel like I'm bashing the game, and in a way, I am... Because it's so frustratingly and obviously close to being good. It just needs a bit more coherency and polish. But at least the devs are trying to innovate, which I guess can be counted as a strength.
As for story and porn, it's good. Well, the story is okay, humanity is conquered by an empire of space jerk... elves? Next I'm gonna need some stupid McGuffin... aaaaaand called it. Whatever, you know the drill, I know the drill, we can slog through this. The characters the story focuses on are well written, and that's what matters, not this space knife-ear empire... fluff, to use a more generous term. Good banter and stupid sexy adventures is what will make this enjoyable. Speaking of sexy, porn is written in first person; it's kinky and hot. I liked it, no real complaints here. Technical side of writing is also good, no obvious errors or typos.
Good music and some VA present, if that matters to you.
TL;DR: 6/10 RPG with a 3/10 UI, 7/10 story, and 8/10 porn. Four stars. Requires slightly more than a potato GPU (we're talking fairly old intel iGPU level of potatoness).