Where Sims 4 Modders Actually Grab Their Templates
Most people looking for a Sims 4 modding worksheet end up bouncing between random forum threads and YouTube tutorials that are three years out of date. The reality is simpler than you might think, but finding the actual usable files takes a bit of navigation because the community doesn't have one central hub anymore. EA's own documentation for the game's scripting engine is scattered across multiple deprecated wiki pages, so I stopped trying to track those down years ago. The main places modders actually pull working templates from are the S4CC forums, ModTheSims, and a few dedicated Discord channels. S4CC has a sticky thread in their scripting section called something like "Modding Resources & Templates" that links to Google Sheets and Excel files people have been maintaining since 2014. The sheet you want is usually titled "Sims 4 Custom Content Spreadsheet" or "Trait Builder Reference." It tracks object IDs, script flags, and the relationship modifier values you need when building anything beyond a mesh swap. ModTheSims uses a slightly different approach. They don't host worksheets directly, but their "How To Make A Mod" section has pinned links to GitHub repos where developers share their reference tables. The best one I've used is by a contributor who goes by "margust," and it includes the full list of interaction states, lot object types, and the enum mappings for the CAS system. Downloading it requires a GitHub account, which some casual modders find annoying, but the file is regularly updated.
There is also a Reddit community called r/Sims4Modders that posted a comprehensive Google Sheet link about eight months ago. It covers reward traits, aspiration scores, and the hidden buff tree. The spreadsheet is free to view but read-only unless you request edit access through a DM to the person who posted it. I've reached out twice and gotten responses both times. It moves slower than I'd like, but the data quality is better than most of what floats around on Tumblr. If you are looking for something more structured, there is a tool called Sims4Studio that includes built-in reference documentation. It isn't technically a worksheet, but it outputs tables you can export as CSV or XLSX. The tradeoff is that it only covers UI-referenced parameters, not the deeper script-level flags. I use both approaches depending on what kind of mod I'm building. For animation overrides, Sims4Studio's built-in reference saves me about twenty minutes per session compared to hunting through raw dumps. One thing nobody talks about is that these worksheets are often incomplete by design. The Sims 4 API changes with every patch, and the community maintainers can't track every new enum value EA pushes out. I hit this problem directly when patch 1.92 added three new relationship interaction types that weren't reflected in any of the public sheets. I spent about two hours reverse-engineering the new values by comparing the game's DLL before and after the update using dnSpy. Once I had the new constants mapped, I updated my personal copy and pushed it back to the ModTheSims GitHub repo. It took about a week for someone else to merge it, so if you need something right now, plan on doing some of the extraction work yourself.
Another counter-intuitive detail is that the most useful worksheet isn't always the biggest one. The sprawling all-in-one spreadsheets often contain outdated columns mixed with current ones, which creates conflicts when you're cross-referencing values. I switched to maintaining a much smaller personal sheet that tracks only the parameters I actually use. For me that's interaction modifiers, buff durations, and the reward trait score thresholds. It takes me about five minutes to look something up instead of the ten or fifteen it used to take when I was scrolling through a hundred-column reference file. The obvious downside to relying on community worksheets is trust. You are importing data maintained by volunteers who aren't paid to verify accuracy. I once used a buff ID from an older sheet and spent an afternoon debugging why a custom trait wasn't applying the moodlet correctly. The value had shifted by one digit in a patch I hadn't noticed. There is no official validation layer, so you have to spot-check critical values against the game itself whenever a major update drops. I do this by loading the game with a test save and triggering the interaction in question, then checking the debug output rather than trusting the sheet blindly. If worksheets aren't cutting it for whatever reason, there is a fallback. Some modders use the Sims 4 Script Debugger, which is a standalone tool that reads live game memory. It isn't as clean as a reference table, but it gives you exact current values for any parameter while the game is running. The learning curve is steeper, and it requires the game to be patched to a version that still supports external debugging, which newer updates have started restricting. Still, it is the only way to get real-time data when a community sheet clearly hasn't been updated yet.
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