How do I get the Allure of the Stars main menu to be shown?

What key has to be pressed for
Allure of the Stars
to show the main menu?

I think it shows

[press any key for main menu]

but it may stay in a "demo like" mode
when I was pressing keys.

I got a screenshot showing what looks like a

game started in auto-raid (1) mode.

but this screen goes away very fast.

I "spam pressed" PrtSC to even get it.

This bug is both in the Synaptic Package Manager download and a
fakeroot apt-get -b source allure
build I did.

Thank you again everyone for showing me how to build packages from source code on Trisquel.

https://trisquel.info/en/forum/minetest-may-not-build

The config.ui.ini
file shows

; Copyright (c) 2008--2011 Andres Loeh
; Copyright (c) 2010--2019 Mikolaj Konarski and others (see git history)
; This file is a part of the computer game Allure of the Stars
; and is released under the terms of the GNU Affero General Public License.
; For license and copyright information, see the file LICENSE.
;
; This is a copy of the default UI settings config file
; that is embedded in the game binary. A user config file can override
; these options. Option names are case-sensitive and only ';' for comments
; is permitted.
;
; The game looks for the config file at the same path where saved games
; directory is located. E.g. on Linux the file is at
; ~/.Allure/config.ui.ini
; and on Windows it can be at
; C:\Documents And Settings\user\Application Data\Allure\config.ui.ini
; or at
; C:\Users\\AppData\Roaming\Allure\config.ui.ini
; or elsewhere.

[ui]
; These two are mutually exclusive:
movementViKeys_hjklyubn = True
movementLaptopKeys_uk8o79jl = False
; The font to use for scaling SDL2 display (best by multiples or 0.5):
;sdlFontFile = "16x16xw.woff"
scalableFontSize = 16
sdlScalableSizeAdd = 0
sdlFontFile = "16x16xw.bdf"
sdlBitmapSizeAdd = 0
;sdlFontFile = "8x8xb.fnt"
;sdlFontFile = "8x8x.fnt"
;sdlBitmapSizeAdd = 2
; New historyMax takes effect after removal of savefiles.
historyMax = 5000
maxFps = 24
noAnim = False
hpWarningPercent = 20
; Uncomment to make all messages white.
; messageColors = []
overrideCmdline = ""
; Legacy: monospace fonts that have fixed size regardless of boldness (on some OSes at least)
gtkFontFamily = "DejaVu Sans Mono,Consolas,Courier New,Liberation Mono,Courier,FreeMono,Monospace"
; sdlFonSizeAdd is now ignored
; runStopMsgs is now ignored