I've spent a lot of time painting 28mm stuff lately, but I always find myself gravitating back toward 15mm sci fi minis whenever I want to play a game that actually feels like a planetary invasion. There is just something about this specific scale that hits a sweet spot that the bigger heroic scales can't quite touch. If you've been in the hobby for a while, you probably know the struggle of trying to fit a "massive" battle on a standard 6x4 table using larger figures. It usually ends up looking like a crowded parking lot where tanks are practically touching fenders.
Switching to 15mm changes that dynamic completely. Suddenly, your table feels like a vast landscape. You can have actual tactical maneuvers, flanking routes, and long-range fire lanes that don't feel cramped. It's not just about saving space, though that's a huge perk; it's about the sense of scale and the freedom to build a world that feels "big" without needing a literal warehouse to play in.
The Goldilocks zone of miniature scales
In the wargaming world, people often argue about which scale is king. You've got the 6mm crowd who love epic, massive-scale theater, and the 28mm or 32mm crowd who want every individual shoelace on a soldier to be visible. To me, 15mm sci fi minis are the perfect middle ground. They're large enough that you can still see the personality of the sculpt—the different helmets, the pouches on the vests, the weird alien facial features—but small enough that you can paint an entire platoon in a single weekend.
When you're working with 15mm, you don't get bogged down in the "infinite detail" trap. You aren't spending three hours edge-highlighting a single kneepad. Instead, you focus on the overall color scheme and the silhouette. This makes the hobby side of things feel way less like a chore and more like actual progress. You can go from a bare plastic or metal army to a fully painted force ready for the table in a fraction of the time it takes for larger scales.
Building a believable battlefield
One of the biggest reasons I love 15mm sci fi minis is the terrain. Let's be honest, 28mm buildings are massive. If you want a decent-sized ruins setup or a futuristic research colony, those pieces take up a ton of storage space. In 15mm, a "large" building is the size of a coffee mug. You can store an entire city's worth of terrain in a single plastic bin under your bed.
Beyond the storage aspect, the terrain actually functions like terrain. In larger scales, a forest is usually just three trees that your models awkwardly stand between. In 15mm, a forest can actually be a dense thicket that hides an entire squad of power-armored infantry. You get to play with line of sight in a way that feels more realistic. You can have rolling hills, industrial complexes, and landing pads that look like they actually belong in the setting rather than being oversized props.
The variety of factions and styles
If you're worried about being limited to just "space marines" or "generic bug aliens," don't be. The world of 15mm sci fi minis is surprisingly deep. Because the barrier to entry for manufacturers is a bit lower than the big-box 28mm games, you see a lot of really creative, niche designs.
You can find everything from hard-sci-fi troopers that look like they stepped out of The Expanse to weird, bio-organic horrors that feel like a fever dream. Brands like Ground Zero Games, Khurasan, and Ion Age have been doing this for years, and their catalogs are massive. You can find "not-Starship-Troopers," "not-Halo," and even some truly bizarre retro-future stuff that you just don't see anywhere else.
The cost-effective way to play big
Let's talk about the elephant in the room: the cost. Wargaming is not a cheap hobby, but 15mm sci fi minis make it a whole lot more accessible. For the price of a single character model in some of the more popular 28mm systems, you can often buy a pack of 20 to 30 infantry in 15mm.
This lower price point does something great for your creativity. It makes you more willing to experiment. If I want to try out a weird desert-themed mercenary force, I don't have to drop $200 just to get a basic squad on the table. I can grab a few packs, a light vehicle or two, and I'm good to go for under fifty bucks. It lowers the "hobby guilt" of starting a new project because the investment is so much more manageable.
Vehicles and the "Big Metal" factor
If you like tanks, mechs, and flyers, 15mm is your playground. In 28mm, a heavy tank is a massive hunk of plastic that takes up a huge chunk of your deployment zone. In 15mm, you can actually field an armored company. You can have three or four tanks moving in formation, supported by APCs and scout cars.
There's something incredibly satisfying about seeing a line of 15mm tanks cresting a hill. They look "right" at this scale. They have presence without being cumbersome. Plus, painting vehicles at this size is a blast. You can go heavy on the weathering, mud, and chipping without it feeling like you're painting a literal car.
Choosing a game system
The great thing about 15mm sci fi minis is that they aren't tied to one specific "official" game. While there are plenty of dedicated 15mm rulesets out there, like Tomorrow's War or Gruntz, the scale is incredibly flexible.
Lately, I've been using my 15mm collection for solo or co-op games like Five Parsecs From Home. Even though that game is scale-agnostic, playing it in 15mm feels better to me. I can fit a whole starport or a cramped underworld bar on a small 2x2 foot board and still have plenty of room for movement.
If you're more into competitive play, many of the older "big" games can be played in 15mm just by converting inches to centimeters or simply keeping the measurements the same to simulate a much larger battlefield. It gives you more room to breathe and actually use tactics like flanking or long-range recon.
Painting tips for the small stuff
I know some people get intimidated by the idea of painting smaller models, thinking they need a microscope. Honestly, it's the opposite. The best way to paint 15mm sci fi minis is to lean into techniques like dry brushing and washes.
- Priming: Start with a good primer. I usually go with a mid-grey because it's easy to cover with both light and dark colors.
- Base Coating: Don't worry about being perfect. Get the main colors down.
- The Magic Wash: A good coat of Agrax Earthshade or Nuln Oil (or whatever your preferred ink is) does 90% of the work for you. It settles into the recesses and defines the details perfectly.
- Pop the Details: Just hit the very top edges with a quick highlight or a light dry brush.
- Basing: This is the secret weapon. Because the models are small, a well-done base really stands out. Add some tufts, some fine grit, or some tiny static grass to give them a sense of place.
Final thoughts on the scale
At the end of the day, I'm not saying you should throw away your 28mm armies. They have their place for high-detail skirmish games and display pieces. But if you want to experience sci-fi wargaming in a way that feels expansive, tactical, and manageable, you really should give 15mm sci fi minis a fair shake.
There is a certain charm to these little soldiers. They represent a bridge between the grand strategy of tiny scales and the personal stories of larger ones. Whether you're defending a remote lunar colony or launching a full-scale invasion of an alien homeworld, 15mm gives you the tools to do it without breaking the bank or taking over your entire living room. Plus, they just look cool lined up on the shelf. There's no denying that.