Skip to content
jonathansatterthwaite-stack edited this page Oct 11, 2026 · 4 revisions

Is This A Mimic(s)? user guide

Is This A Mimic(s)? (ITAM(s)? for short) is an inventory manager for tabletop RPGs, with D&D 5e built in. Keep track of what your character carries, where it is and what it weighs. Use it on your own, or run a party where everyone at the table has their own inventory, trades items and buys from the GM's shops.

The inventory, with the character panel and a backpack

Is This A Mimic(s)? is the new name of Pack Rat, as a fresh start: see Getting Started.

Get the app

Windows ITAMSapp.exe: one file, nothing to install.
Android ITAMSapp.apk: Android 7.0 or newer.
Browser Open the web app: any modern browser, on PC or phone.

See Getting Started for installing and your first character.

The guide

Playing

  • Getting Started: install, your first character, the screens.
  • Your Inventory: adding items, list and tile views, filters, stacks, the character panel.
  • Containers: backpacks, gear strapped outside, quivers and cases, waterskins.
  • Equipment: what's equipped where, and attacks, damage and ammunition at a glance.
  • Coins: the coin purse, buying, selling and change.
  • Sets and Drawing Cards: decks of cards and other sets, drawing at random.
  • Writing and Pictures: letters, books, maps and handouts.
  • Campaigns: several games on one device, each with its own characters, shops and rules.

Making things

  • Catalog and Custom Items: the item catalog, custom items, templates and colours.
  • Item Features: what an item can do: hold things, hold liquid, charges, attunement…
  • Item States and Rules: attuned, identified, cursed: what an item becomes in each state, and what happens by itself.
  • Drawn Icons: draw your own icons, including live ones that show how full a bag is or tell the time.

Playing together

  • Party Play: hosting and joining a party on your network.
  • Running the Game: the GM: preparing campaigns, the players at a glance, host and GM roles.
  • Trading: swapping items and coins with other players.
  • Shops: the GM's shops: buying, selling, stock and money.
  • GM Controls: the GM's panels of sliders, switches and maps, the values they set, and what reacts to them.
  • Treasure: hoards and treasure tables; giving loot, or sharing it out among the players.

Everything else

  • Settings and Backups: this device's mode, role and animations, where characters, rules and backups are.
  • Files: everything you've made, and game systems: export, copy, move, delete, import.
  • Writing a Game System: for other games: templates, states, money, panels.
  • Troubleshooting: install warnings, joining problems, where your data is.
  • Developing: running it from source, building the apps, where things are.

Is This A Mimic(s)? includes material from the System Reference Document 5.1 by Wizards of the Coast LLC (CC BY 4.0). It's an unofficial fan tool.

Clone this wiki locally