Progression

Research and Economy

Documentation details tech tree prerequisites, star milestones, diamond spending strategies, and completionist badges.

2
Guides: October 19, 2026
Updated

All Guides

Gems Guide: How to Get and Spend Diamonds in Roblox

Get Overfreight gems and diamonds for free through daily tasks and ads, or learn the best ways to spend them on train customization and research.

Research: Tech Tree Unlocks, Costs, and Cargo Chains

Overfreight research unlocks faster trains, platforms, and rails. Check all star costs, cargo requirements, and progression paths on Roblox.

Videos

Gems Guide: How to Get and Spend Diamonds in Roblox

Research: Tech Tree Unlocks, Costs, and Cargo Chains

Quick Answers

Progression FAQ

How do players earn stars for tech research in Overfreight?

Stars are earned by completing cargo deliveries along active supply lines and expanding operational station platforms. Read the guide

Are diamonds mandatory to earn the Overfreight badge?

The Overfreight badge requires finishing all standard career research projects, explicitly excluding nodes that require diamonds. Read the guide

What reward is granted by the Overfreight badge?

Completing all non-diamond research unlocks the exclusive orange locomotive livery across your fleet. Read the guide

Explore More

Guide4Foundational tutorials cover map selection, terrain challenges, career milestones, legacy sandbox saves, and operational yards.Railway8Articles provide guidance on signal placement, junction geometry, manual route creation, and troubleshooting pathing deadlocks.Trains7Equipment profiles examine diesel engines, catenary electrics, passenger carriages, multi-engine consists, and timber wagons.Liveries5Step-by-step walkthroughs explain decal templates, custom 3D mesh imports, gem costs, and international train wraps.Industry6Detailed manuals cover extraction facilities, metallurgy recipes, sand boost mechanics, freight terminals, and city goods.

Keep exploring

Wood Delivery Problems: Route Troubleshooting

Fix Overfreight wood delivery problems in Roblox. Learn how to resolve invalid cargo routes, sawmill bottlenecks, and train traffic blockages.

Liveries: Decal Guide, Default Colors, and IDs

Overfreight liveries let you customize trains using Roblox decal IDs or unlock default map themes. Here is how livery templates and unlocks work.

Train Mesh IDs: Custom Models and Setup Guide

Configure Overfreight train mesh IDs, unlock custom body models using gems, and learn how to import community trains and textures on Roblox.

Intersections: Layouts, Signals, and Gridlocks

Overfreight intersections require proper signaling, clean merge angles, and grade separation to stop train gridlocks and keep cargo moving smoothly.

City Goods: Production, Routing, and Export Guide

Overfreight city goods generate at freight terminals from delivered cargo. Here is how to route them between terminals and export them for profit.

Realistic Mode Guide: How to Unlock and Yard Setup

Overfreight realistic mode unlocks with the A nice gift badge. Learn sorting yard mechanics, locomotive switching, and reversing routes.

Locomotives: Complete Stats, Tiers, and Rail Guide

Overfreight locomotives power your rail freight network. Compare diesel and electric engine stats, research costs, and realistic yard switching rules.

Overfreight no path found Error Fix and Route Guide

Overfreight no path found errors happen when tracks are broken, signaling blocks travel, or routes are invalid. Here is how to fix train routing.

Overfreight abandoned tracks: Causes, Fixes, and Badge Guide

Overfreight abandoned tracks slow train speeds to 20 km/h when Bad Rails sit idle. Here is how to fix them, avoid decay, and unlock the maintenance badge.

Overfreight shunting: Realistic Mode Yards and Operations Guide

Overfreight shunting separates locomotives and freight cars in realistic mode. Set up sorting yards, reversing modes, and electric-diesel locomotive relays.