You find a character you love, a beautiful forest tileset, and a chest that would look perfect in your first dungeon. Then you put them in the same scene. The character looks pasted in, the chest seems enormous, and the trees belong to a different game.
Each piece can be good art. The trouble is whether they agree with each other. Before committing to a pack—or spending a weekend importing it—build a small comparison scene. A player, a doorway, a patch of ground, and one enemy will tell you more than a folder full of attractive previews.
Check the pixels, not just the file size
A sprite saved in a 64×64 image may have been drawn at 16×16 and enlarged four times. Another 64×64 sprite might contain genuinely finer detail. Their files have the same dimensions, but their pixels will look very different beside each other.
Look for the original drawing resolution, the size of each animation cell, and whether the download includes enlarged copies. Transparent space around a character counts toward the cell size, too. A 16×16 cell doesn't necessarily contain a character sixteen pixels tall.
For example, enlarging an 8×8 character to 16×16 with nearest-neighbor scaling makes each original pixel a 2×2 block. It doesn't turn the drawing into native 16×16 art. That can be a deliberate style, but it's worth noticing before combining it with finely detailed scenery.
Choose a common display scale for the test scene and compare the actual drawings. If one sprite needs constant exceptions to fit, the pack may cost more editing time than you expected.
Put a character beside a door
A doorway is a useful reality check. Can the character plausibly walk through it? Does the chest look like something they could open? Is a tree supposed to tower over them, or does it only look huge because the packs use different proportions?
Then look at the viewing angle. A top-down character drawn mostly from above can feel out of place beside furniture showing a lot of its front face. Matching tile dimensions won't fix that. Compare how much of a table's top you can see, how roofs meet walls, and where a character's feet touch the ground.
You don't need perfect realism. You need a consistent set of decisions. Save a screenshot of the comparison scene and use it when choosing the next pack.
Watch the character move
A preview image can't tell you whether a sprite has the animations your game needs. Check the listed directions and actions: idle, walking, attacking, casting, taking a hit, or dying. Don't assume they're all included because the character sheet looks large.
Think about the actions players will actually see. A game with attacks in four directions needs an answer for every direction, even if that answer is intentionally reusing or mirroring an animation. Mirroring can also swap a shield or weapon to the other hand, which may matter for your design.
In your test scene, line up the character's feet across frames and play a short loop. Unexpected hopping may come from inconsistent frame placement rather than the movement code. Check a sample sheet or the pack's documentation before buying when those details aren't clear.
Make the important things easy to see
A matching palette helps, but readability matters just as much. Put the enemy on the busiest ground tile you plan to use. Add a pickup nearby. Can you still tell where the enemy ends and the floor begins?
Compare outlines, shadow colors, and the direction of the light. A thick black outline on one character and soft colored edges on another can make them look unrelated. Recoloring may help; it won't automatically reconcile different drawing styles.
Also give the background a chance to be quieter than the action. If every stone, plant, and weapon is equally bright, the player has to work harder to find the thing that matters. Test at the size someone will actually play, not only while zoomed into the art editor.
Separate an art mismatch from an import problem
If everything looks soft, check the engine settings before rejecting the artwork. Filtering, scaling, and compression can change how a clean source image appears in a game.
Godot's image-import documentation recommends lossless compression for pixel art and explains where filtering is configured. Our Godot pixel-art guide walks through the distinction between blurry edges, uneven pixels, and motion shimmer. Fixing those problems won't make conflicting art styles match, but it gives you a fair comparison.
Check what the license lets you change
Before planning a recolor or a commercial release, read the pack's actual usage terms. Check whether modifications and commercial games are allowed, and what the rules say about sharing source assets with collaborators. Keep a copy of the applicable license with your project records.
If you're exploring Dongu's Rat Packs, our collection guide explains the themed volumes and links to the purchase rules. Starting with one theme gives you a manageable set of pieces to compare before mixing in other art.
You can keep the whole test small: one room, one player, one enemy, one pickup. If the proportions make sense, the movement holds together, and the action is readable, you've learned something useful. If they don't, you've found the problem while it's still cheap to change your mind.