Block Round vs SeedLander
Block Round
vinisouza128.github.io
SeedLander
seedlander.comSide by side
| Figure | Block Round | SeedLander |
|---|---|---|
| Price from | Free | £1.99/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Plans published | 1 | 7 |
| Spec score · Minecraft Shape Generators | 8.3 (#2) | 8.2 (#4) |
| Integrations | The exported schematic can be imported by WorldEdit, Litematica and MCEdit. | Optional add-ons include a Discord bot for activity notifications, and the service uses Stripe, Google AdSense, Google Analytics, Cloudflare, Resend or SMTP, and Krystal. |
| Purpose | Block Round generates circles, ellipses, spheres and ellipsoids rendered with Minecraft block textures. | SeedLander is an online toolkit for analysing Minecraft seeds with biome maps, structure finders, ore prediction, slime chunk calculation, portal management and team collaboration. |
Plans
SeedLander
- Premium World£1.99 a month
- Team Add-on£2.99 a month
- BasicFree
- Free WorldFree
- Premium£1.99 a month
- Team add-on£2.99 a month
- Premium + Team£4.98 a month
In their own words
Block Round
Block Round is a free browser tool for making circles, ellipses, spheres, and ellipsoids with Minecraft block textures. Its 2D modes offer Euclidean, Bresenham, and Threshold algorithms; the 3D modes include X, Y, and 45-degree diagonal cuts, with a 3D preview. Users can choose blocks such as Grass Block, Dirt, Stone, Oak, Diamond, Sand, and Gravel, or a Random mix. The tool exports 2D figures as PNG and 3D figures as Sponge schematic v2 files, which WorldEdit, Litematica, and MCEdit can import. It runs in a browser without installation, an account, or a backend, and works offline as a PWA. Settings last for the session and reset to defaults after a reload. A technical math companion is available in nine languages, with each PDF described as at least 25 pages. The project states that its code, layout, design system, and sound engine are All Rights Reserved, and says it is not affiliated with, endorsed by, or sponsored by Mojang Studios or Microsoft.
SeedLander
SeedLander is a browser-based toolkit for analysing Minecraft seeds in Java Edition and Bedrock Edition, including Java Large Biomes. Its tools cover biome maps, structure searches, ore predictions, slime chunk calculations, portal management, and team collaboration. The structure finder covers 25+ types and provides coordinates for places such as villages, strongholds, temples, mansions, and monuments. SeedLander states that most structure results on Java and Bedrock are 97%+ accurate, while cautioning that they are predictions rather than guarantees. The tools run in the browser using WebAssembly, and seeds are not sent to SeedLander servers for processing. Map, finder, and account pages support touch use on phones and tablets; a dedicated mobile app is on the roadmap. The free Basic plan includes all seed tools, 10 custom markers, and three saved portal pairs. Premium costs £1.99 per month per world and adds unlimited markers and portals, ore tracking, structure completion tracking, notes, and an activity log. A Team add-on costs £2.99 per month per world on top of Premium.